Un-sieged tanks change

Hello. We all always think of fun things to add to the game, to make it different and entertaining, and that could be impactful. I was thinking of an ability (That could be turned on and off, and researchable at the tech lab). What if Terran’s un-sieged tanks pushed enemy targets back a little bit? I was wondering how that would fit in some tactics, change balance(maybe), develop new BOs, or bring randomness and fun to the game.