Youre presenting skill of class abilities usage. When im bring up over saturation of it from low CD game mechanics design with casual play in mind, not competitive play. When every notable game that has high viewers/active player base with character specific abilities trigger a CD on usage with a resource drain. For the skill usage triggering a CD in itself doesnt present adequate negatives.
Couple this with infinite ammo and Ultimate percentage or full gain carrying over upon death. The skill ceiling just wasnt lowered, it barely exists.