For a circular saw, it's not doing the one unique thing I was expecting it to: to hit flesh and rip into it until I stop pressing the button (or run out of fuel / energy).
When you announced we were able to ride it, I assumed (yeah, yeah) that meant as if it were a vehicle (i.e. until I stop pressing a button, run out of fuel / energy, or hit an obstacle), maybe slightly unstable so we'd be in for a wild ride.
It doesn't have to be on-par for damage for me, so these buffs are meaningless. Its role could have been like the chainsaw in DOOM: perhaps not the most efficient weapon, but oh so much fun.