This one is so overpowered ahahaha. 
Whenever proposing these kind of changes, remember to balance against how many of this unit a player can make. The follow up proposal also reduces their supply cost, so upwards of 30-40 abbs that explode around them.
Even at 10 aberrations, that’s a lot of on and off 30sec cycles of spawn. A player can literally roll out an army of abbs here with exploding Banelings and Scourges as they roam the map. Even 1 bane/scourge would do devastating dmg to a wave, it is often overkill. With Abb’s high bulk, they just walk up with different exploding cycles and erase.
I think if this did happen, I’d just send groups of 10 to different directions and watch the map clear.
At least that’s how I’m seeing this particular proposal.