Increased attack speed isn't really panning out for us because of the reload speed issue which remains, and the tiny clip sizes.
Apparently asking for Increased Attack Damage isn't going to work.
So how about changing the bonus to Increased Movement Speed?
Makes the armor great for positioning, which gunslingers need to do, and makes up for the lack of fire resist as well IMO.
Wasn't there Increased Movement Speed on some other set and it was changed so it's only on raredrops since it's really, REALLY useful? I'd certainly have to give some heavy thought to switching over to Gunslinger even as a sword/bomb user if it got that.