I'm pretty sure Batman v Cheetah is supposed to be way better now isn't it? I dunno. I swear reading that cheetah players were figuring it out. Pointless talking point I know, just saying.
I am protective of Batman because I like him and enjoy watching him.. but the + on vortex is a little nutso given everything else he can do. I think he needs to KEEP THE VORTEX, but it should be tweaked. Keep it safe, absolutely, but + is a wee bit much lol.
I also think bats should keep charging while one is out - just way the fuck slower. This let's him do everything he does now but spreads it out a little and opens up round some to the opponent.
If you kill his vortex and kill his bat recharge, you are just going to see Atrocitus Batman's. They will spend huge parts of the match huddled up, doing nothing, running away and just waiting on bats, for a little flurry of activity that can be totally stopped right away, then back to huddled waiting. You may hate Batman and want him to be weak - but that kinda shit is bad for the game. I keep saying it, characters need to be dynamic and interesting.
If Batman loses trait recharge while one is active then he at least needs the ability to choose the number of bats he calls at a time, so if he builds up more than one, he can choose to only call one at a time.
Just VERY LIGHTLY nerf him - and make the mid tier and low tier better. Pull the game up, not down.