I would go with this idea of Ainz, seems like a great idea, or make current feast like pillar and hurricane ( run cast with cha/ damage adjustments) or finally make cutter a 1.5 sec cast/ or take away slow run, because anyone with a decent brain can interrupt a cutter, even in tf, because the sound of the jutsu is sooo fking alarming, everyone rushes to a cutter user to cancel in tfights.