Also, small indie darlings weren't in multiplexes before the superhero craze, I don't see what would elevate them there now. I've always had to go to special theaters to see indie movies. Superhero movies didn't cause that.

We'd just get more Blockbuster action movies that aren't comic book movies. More disaster films, more terminators, more Michael Bay stuff. I really don't see any other result other than maybe more comic book related tv shows (unless those are gone too, then you're just leaving a large untapped market and likely killing another industry).

Batman v Superman is terrible, but the warehouse scene was great.

That's fine, we can't really discuss it without ruining it for OP, so to each their own.

Nope, it's legitimately a bad ending, but it's an extremely fun ride to get there, so I still recommend it.