The arc blade is certainly a frustrating super to deal with, however completely removing the regen would render it almost useless. The reason I imagine everyone has a problem with it is because they believe they are being cheated out of a kill because they have time to see the Bladedancer coming towards them and shoot a few times before they are killed. This is the same frustration they experience when they get smashed by the fist of havoc, and when blasted by a nova bomb. The super abilities are inherently over powered, and although the current metagame favors blade dancers, a permanent nerf would open the doors for further nerfs for other supers which would make the game boring. Some good ways to counter arc blade include, team fire, backpedaling while hip firing, shotgun melee, fusion rifle and jet packing, Fist of havoc (carrying a pocketful of nope), nova bomb, rockets, and the list goes on. You win some you lose some, but when the nerf bat gets swung it's not fun for anyone.