Just reading through it for a second time now and I am so glad they ditched this. Yes, this was the first pitch and we know changes were made, but even then it sounds like a lot of those changes were just tweaking things rather than a massive overhaul. The biggest overhaul sounds like getting rid of the terrible Bruce/Lois idea (thank you WB for that one!) but as far as we're aware it still comes down to Batman fails to protect Lois, Darkseid kills her, Knightmare, etc.
I also have to say I'm sorry, I know everyone talks about this being a 5 film arc and Snyder's Elseworld story, but the minute you have spin off films and start bringing together the villains and other plot elements from the solos like this, it is a cinematic universe and it's the DC's first. People will quite reasonably treat this and judge this as the main cinematic universe because it is (or at least was planned to be).
The Good
I love the idea of using the Injustice League/Legion of Doom as the villains for JL2 and bringing together the villains from the solos. I like this being a connected universe.
The idea of Wonder Woman reconnecting with her mother, becoming queen, rejoining Themyscira with the world. This all feels like a good end to her arc.
Aquaman - same as Wonder Woman, this sounds like a satisfying resolution to his story.
JL2 opening sounds like good old fashioned heroics which we've needed to see some of in this universe (the political refugee thing feels a bit weird given they won't have time to explore it, the world was shown to embrace Superman after his death and the team just saved the world a few weeks ago. World being divided works well enough with Atlantis and Themyscira still being separated).
Bringing back Deadshot. I liked Will Smith as the character and still hope he comes back one day, just hopefully for something better than this.
Honestly, the proper Superman vs Darkseid fight in JL3 would probably have looked fantastic and the new age of heroes with Atlantis and Themyscria uniting with the heroes, human world and GLs against Darkseid sounds great and a nice pay off to the history lesson in JL.
The Bad
It's way too over stuffed. Even split in two you'd likely be looking at a BvS situation with a hacked up mess in cinemas and 4 hour director's cuts on home release. There's just too much going on here.
I'm not sure what the point of Wonder Woman's God of War and killing Superman vision is when neither of those things come to pass, even in the Knightmare future.
Feels like we're missing some beats as Aquaman goes from failing to bring the 7th kingdom into his alliance in one scene to the 7th kingdom joining the alliance in his next. I'm sure this would have been fixed in scripting but here it just reinforces the feeling they were stuffing too much in.
Darkseid just arriving and stealing the anti life equation makes me laugh in a way I'm not sure it was meant to. Like, as comic fans we know how linked Darkseid and the equation are but to a general audience it could easily come across as the big villain getting what he wants and then a bigger villain randomly drops in out of nowhere and robs it out from under him. We already saw Lex communing with Stepphenwolf so showing Lex working with Darkseid behind his own team's backs might play better here.
The whole "she's my world" feels forced in, only there as a link back to the Knightmare scene in BvS and to foreshadow what's about to happen. Bruce freezes when he thinks it's Clark's kid but jumps into action in JL3 when he knows it's his own? That really doesn't feel like Batman to me (I know this was changed but the whole he freezes and does nothing is rough regardless).
The use of the Injustice League just to set up the Knightmare world. Would have been better as it's own thing so we could actually have the two leagues face off properly. Their defeat in JL3 sounds like a quick footnote before the main battle.
Darkseid feels like he's just there to kill Lois/set up the Knightmare in JL2 and then be the big CGI fight in the third act of JL3. He deserves much better than this.
Batman destroying Darkseid matches with Final Crisis I guess but with this allegedly being Superman's 5 film arc, Superman pushing Darkseid back to Apokolips would have felt more fitting IMO. This whole story feels too Bat centric overall.
The aftermath with Wonder Woman negotiating complete world peace feels a bit over the top (even to someone who prefers his heroes with hope and optimism) but if this was "it" then I have no issue with it. It just feels that, except for Batman, this universe was just getting started. Feels like a waste, especially with WW and Aquaman's solo being so well received, this would have closed the door on them.
20 years later - Not buying that Lois and Clark, who was adopted, would hide the truth from their kid for 20 years. I know it was changed but that planned ending does go to show it became all about Batman the moment they brought him in.
The Utterly Terrible
Superman - I'm sorry but if this was his grand five film arc for Superman, it sucks. Superman not wanting to be Clark just feels regressive for the sake of giving him an "arc". Four movies (BvS-JL3) to essentially get him back where he was at the end of MoS only now raising Bruce's kid. Changing the child to his own son (as we believe to be the case) is better but still doesn't change the fact that Superman's arc just gets him back to where he was after MoS but now with a son. And really, he needs a kid to make him want to be Clark again? This was the grand plan? Yeah, I can see why they wanted to make changes and get to a more classic feeling Superman sooner.
The part I hate - Superman submitting to Darkseid and then killing for him. Sorry, Superman breaking because Lois dies doesn't fit the character IMO. The whole trope of Lois dies and Superman goes bad (mind controlled or not) is something I absolutely detested in Injustice and I hate it here as well. And, even accepting this as happening in a moment of pure grief at the second of her death, that he then goes on and kills for Darkseid is character breaking for me. That's always the part where Superman mentally fights back and shows his will is stronger. This is just taking Superman off the board - AGAIN! - so Snyder can play Knightmare with Batman in a trench coat shooting things. Yeah, no thanks. I'm glad WB killed this. Reading this I'm just convinced Synder didn't have a clue what to do with Superman and that was ultimately a major factor in why audiences didn't connect with him and these plans fell apart.
Bruce/Lois relationship, Batman's sacrifice and the way his legacy was handled. Before WB made him cut it, he really thought Bruce/Lois baby was better than not killing Dick and passing the mantle on that way? Or live action Batman Beyond? Or Damian? Or really any Bat family? And the way it reads that Lois chose Superman because he needed her more rather than she loves him. That just leaves a bad taste in my mouth.
Overall there's definitely some good stuff in there and some of the ideas could still work, but the negatives far out weight the positives for me and I can honestly say I think WB made the right move in scrapping this and wanting to make JL a one and done (with a possible Injustice League/Legion of Doom sequel if it went well). For all the hype and build up Darkseid is just there to kill Lois and set up the Knightmare in JL2 and then be the big boss fight in JL3. Stepphenwold gets more to do in the theatrical cut! If this was still the basic plan when they made it a one and done they should have just used Darkseid in the first JL like in New 52's Origin. Superman's grand arc is a joke. Wonder Woman and Aquaman sound like they get satisfying arcs and I honestly hope we still get some elements from this in their solo movies. Flash and Cyborg are important to resolving the Knightmare but doesn't sound like they get much besides that. And I'm not sure what to make of Batman. The whole Bruce/Lois plot is terrible. Take that away and Batman's just kind of there in the present day stuff until he dies protecting Lois and destroying Darkseid, and in the Knightmare world is just trying to fix his mistake. Giving him Carrie as a legacy character and adding in the Robin backstory would definitely be an improvement over this but something else would need to go to make room for it or it would just be stuffing the movie even fuller. It might make an interesting Elseworlds comic, and for those who want it I hope it does one day, but for the main cinematic universe (I'm sorry, that's what it was) and the first cinematic Justice League this was bad. The cinematic DCU is still trying to right the ship after BvS and WB's flawed attempt to course correct JL, even changing some elements this would likely have been a death blow.