Being a caster wasn't the new playstyle change I wanted for my gun
Having gotten BRD to 60 recently, I don't think the restriction of mobility is that big of a deal unless you're one of those people constantly moving around the boss for no reason other than to exercise the right of free mobility and to lose autos. You get Straighter Shot and WM-off for any significant required movement, as well as the more situational Repelling Shot.