I wouldn’t reboot his kit but add onto it.
1 Give him a seperate mobile charge by holding any button,
2 Chargable moves during Armor utilizing the mobile charge but zoning and projectile based mostly as compared to Zero’s which are melee move extensions.
3 4 More special weapons. 3 in air for QCB+K, QCB+P and QCF+K and one on ground for D,D+HK. Have all 8 have alternate chargable versions in Armor mode. Allow Air ones to cancel into air ones.