Thx for your feedback, the web version seems to have dome problems. The wimdows build seems to work fine tough if you want to give the game another chance :D. Also thx for the nice ideas can you further specify what you mean with sandbox mode?
I think he meant that making it so that we can freely make any battle, choosing the characters for either side. I'd also quite like this since that brings up the possibility of local 1v1, which increases replayability even more.