I'm excited about animations being unconnected to the powers. I keep having ideas about possible animation themes.
One that leaps to mind is gadgets: Every time you use the power in question, the character pulls a gadget out and uses it. Like a small net gun, taser, maybe a telescoping wand for a melee attack. This would likely be rather complex to code, true, but it's one step closer to being batman.
Something else I want is shape-shifting animations for melee combat. Imagine like clayface, turning your hands into hammers, axes, or maces to smash or slash people. Now, that's something I'm not expecting at release, I can only imagine how hard it would be to code, but it's something I hope will come eventually.
Who else here has wishes for animation styles?