Yup, really liked it but it's been a while since I've seen it.
With all due respect what you're saying is pure conjecture, right now we know that JJ is developing a Superman project (probably with a 'black' superman) and Henry is still Superman, which tells me we're getting more than one superman, that sounds like 'alot of superman' to me.
Superman is being handled by Abrahams and when JJ comes on a project, said project goes into radio silence so lets wait and see what WB wants to do with Superman.
Even if Snyder wants to do more JL, don't count on Cavill returning as Superman because he was the one who worked with Whedon to bring us the Superman that we saw in Josstice league and that Superman was a 180 from Snyderman.
I honestly thought it was the "you smell good line", which was stupidly hilarious as it is, but apparently it is as you said "You... spoke", which was the funniest thing I heard all movie and very 'meta' from Snyder if it was intentional.
As I said, Snyder uses Superman as a plot device where his death brought Batman redemption and brought Darkseid's troops to earth but don't count on Snyderman having much depth, dialogue or character arc to speak of.
I was talking about Snyder's so called trilogy and not just JL, also 71% RT and 54% metacritic aren't what I call very positive, they're simply very positive if you compare them with MOS and BvS, and with JL Snyder had the advantage of a 4hr over indulgent cut on a streaming service with a terrible theatrical cut to compare favorably to.
Snyder is yet to show that his DC movies can succeed in a theatrical setting, which is what counts most for the studio.
Don't forget BvS had a mighty 29% (less than Josstice league) and a pathetic 2.0 multiplier, which remains THE worst multiplier in any movie to open over a 100 million in hollywood history. The response to BvS was so bad that Snyder ended up getting fired and Josstice league, for the disaster that it was, had a better critics rating and multiplier than BvS, which is honestly pathetic.