I'd like to add customizable Supers; either every character gets Supers you can equip, or when you equip a Minion, it replaces one of your Supers no matter which character you're using as a Minion Super.
(i.e. Helghast replaces your Lv1 Super with some kind of projectile Super where he pops out and shoots an oversized [for his cute lil body] rifle)
"The best things in life must be taken... by force!" ~Captain Khan