I like the new things out of the sides that are teasing people at the possibilities in the future.
When you are thinking about how to distribute abilities to the new heroes, I suggest that you do in a way that gives different heroes different roles. We don't want all the heroes to be the well-rounded general purpose hero. Like Stettman was interesting because you could heal your teammates. Maybe if you have heroes with channeled stuns, and effects/slows, it would make for interesting team play.