I would make Probius a support.
… and as a Protoss probe make him repair structures, which would be more logical than Abathur’s level 7 talent, him never having the mule ability in the Starcraft universe, Zergs normally slowly regenerating themselves and the M.U.L.E. technology being a Terran one.
Since Protoss probes are ressource farmers, he might also remain the good XP farmer (wave clearer) he already is.
Remove black arrow, as it never should have made it past beta and she already has a new trait, in the form of banshee’s curse
KtZ ain’t OP, it’s just that his hitboxes are absolute garbage. Chains that end an inch away from me on my screen and clearly had zero contact with me still catch me. Other than that, he’s easy to fight against.
Zarya’s level 20 Graviton Surge upgrade should get it’s damage back.