ApertureBlack
Even with GL, Superman, and Adam's great spacing game with the combination of their great midrange attacks and zoning tools mixed in, rushdown characters like Batman and Doomsday get in that ass and stay there so they can't play their games from far away anymore.
I think we just need to get all the other characters that get most of their damage by rushing down as good as Batman and Doomsday somehow. It's not impossible, we just need to give a character like Catwoman and Joker a ton more cheap shit to get in like Bats and Doom can.
This way GL, Superman, and Adam could zone a bit but'll be forced to play their midrange game and rushdown characters could get in that ass but will also not be so broken that it's an instant win once they do.
I just don't think taking away the tools GL, Superman, and Adam have would be more ideal than just making these other characters be as good as Batman and Doomsday in regards to the matchup.