Have traits that alternate abilities like increasing duration, or have muliple, or chaning attack patterns
Examples
War Cry could get and extended trait that makes it last longer or one that makes its are bigger, or one that increase its kinetic side blasting enemeies a bit better.
Boomerrang (and its SPIN offs) could get a mod that sends out two or three
Crash could have a wall form or a trident (three forking outward) or even a ring