It'd be neat to have a training area with dummy targets to get a feel for the characters. Trying out a new character in a live simulation, with just a text description of their weapon and skill, you really don't have much time to figure out what you're doing. I was trying to figure out how to use Alicia's wall jump for example. Sometimes she'd jump, but the height varied, and other times she'd cling to the wall. Just something so that new players don't have to get into matchmaking, find a game, probably die repeatedly, probably lose, repeat, just to learn the character.