New niche for the flails
The flails suck balls which is a shame because they are very cool weapons.
My suggestion for making them better and unique is removing their blue tracer part (parriable but not damaging area) and making their red tracer (damaging part) slimmer. This way they will behave like you’d expect a ball & chain: you can’t parry the chain without getting hit by the ball.
Worth a try?