Think this belongs in the gameplay thread, but Ill let the OP decide.
The last time we buffed banshees, it was a mess. I think it's just getting overshadowed by other guns right now (ie. arty) because it really does do what it's designed to. Sets fires, provides explosive damage, and easy to shoot rockets.
All of that said, even I can agree with 6 instead of 8 stacks for guns to boot people off. That's a small enough change that I wouldn't imagine requiring heatsink ammo like the old days, but it'll be a better option to consider.