Bullet Consumption

Personally I think Gunslingers will have a lot less Bullet problems than NLs have star problems late game. Sure they have Soul Javelin (which they won't max until 17x or later) but Gunslingers have more than triple the capacity per slot. Also Hermits shoot the most projectiles per second in the game (10 per second, including the SP stars). Gunslingers will either use 8.3 a second (Bullet Storm) or less if they're using any other skill, which they should be quite often.

Off Topic: Gunslingers should NOT have Wind Booster because it wouldn't increase their attack speed at all due to the speed limit in MS.