The hard part about Superhero games is that the ones with the fun powers are damn near impossible to make work.
Green Lantern? His ring can take any shape you can imagine and is basically unlimited power on your finger. How the hell do you replicate that without making a hlaf dozen things like boxing gloves, saws and generic lasers?
Superman? Looks at Superman Returns. They made the city the health bar since he's practically an almighty and invincible god.
That's the problem with DC characters. Well my problem with them anyway. Half of them are invincible gods and the other half are basically Batman with costume changes.
It's one of the reasons Marvel tends to make better games, well they have a better than average amount anyway. While they have their own invincible characters, they also have more 'normal' people like Spider-Man and Captain America.
As for games that DC could pull off? Aquaman might be able to pull it off. As long as they don't have things like needing a constant refresh for water which would be annoying as hell. The occasional level where he's being dehydrated on purpose would be interesting, more of a stealth game where you can only take a few hits than the usual beat 'em up.
Flash and other speedsters can literally hit the speed of light in seconds. Their perception of time can slow so bullets seem to stop and lasers are slowed down. Unless it's an origin game where you speed up as you go through the game then I don't see making it work right. Personally, I'd love to see a Flash game done well. Have something like in Metal Gear Revengance where after you knock an enemy into the air, time slows and you do a rapid fire punch system to finish them would be awesome.
Wonder Woman could work if she played as more of a God of War style. Less of a murdery rampage and more of a battle system where she needs to use tactics and various weapons to defeat various mythological creatures. She is really damn powerful though so maybe have hers be an origin story as well with her learning how to use the powers/training?
Teen Titans could work as long as it's not using the god like ones. I imagine the original roster could work or the classic one with Starfire, Jericho and Donna Troy as long as they aren't too powerful.
Doom Patrol and Metal Men would be interesting but I don't see that happening.
Having a Gotham PD style game would be neat. Have it like the Gotham Central comics where you play as one of the people Gordon trusts like Bullock, Montoya or someone new that transfers in and you have to solve a huge mystery while dealing with Scarecrow, Mr Freeze and so on. Batman would show up infrequently and would occasionally steal evidence but the other cops would cover for him as he's helpful. Actually, I'd love a game like that.
