I can deal with Gauss Barrel's casting. But the graphical model needs to go. Change it to like, "Gauss Mode", keep the stance icon (because Minuet, Cleric Stance, and the tank stances don't have additional models and can be seen and identified just fine), and I dunno, make it change the light on the lunchbox or add a minor electrical current to your gun.
Just. . . ditch the squid.
Also, while I'd love more attacks (though there's only so many ways you can fire a gun/utilize a turret). I dream of being a proper buffer/debuffer support DPS. But for that to happen, at least in PvE, things would have to not be immune to everything.