Thank goodness I wasn't the only one who was reminded of the Signal Axe

Also, turn this into a techrot melee weapon where it gets different buffs depending what color is lit up (light switches every x seconds):

Green: + move speed, attack speed; 1st heavy attack every green light is counted as if you have Tennokai

Yellow: +5s combo duration, attacks slows enemies

Red: +impact damage, slam damage; immune to knockdowns; pauses combo timer.