Some ideas: PVE Exotic idea. A close range weapon (sidearm, shotgun, sub). Exotic perk is nullifying enemies that explode on death. When holding a heavy weapon pressing and holding the change weapon button should bring up your energy, not primary. Suppression grenades should take out titan shields, rifts, and any projectile super blasts like the nova bomb babies that track. Exotic arms that have a weapon mod slot. this weapon mod would apply to whatever firearm you are currently holding.