As far as PvP goes, it's easily overlooked that reloads increase the potency of your attacks and doesn't impact heat at all. You can literally freeze your heat gauge wherever you want it and deal high damage if you shoot>reload>shoot>reload. . . and trust me when I say I didn't miss that 5% at all. Granted, I play a very strong MCH in PvP, but the job is still plenty powerful even with just a 5% increase.