I dunno about bubble, but NLB became a crutch when the sniper flinch became so bad they're close to unusable. Then you take NLB and realize its flinch WASNT changed like other snipers were. It flinches but the flinch isn't "stacking" like it does with regular snipers. Add that to always spawning with ammo and you can run that with a Mapador and it's scrubby.