It would allow us different builds and loadouts immediately. So we could use different artifacts for orbitals and supply drops, before going back to our original build. Or better, using all our superpowers with a might build, then switching to Percision build while they cycle their cooldowns, then back and forth. Also being able to use tank or healer shields, or controller debuffs inbetween dpsing. or vice versa, letting us use controller power recharge and debuffs, then doing some dps in between. I think this would greatly diversify gameplay without needing much.