I have no problem with it being a Bonus Action but it absolutely needs severe limits on its distance.
Well, I don't know... If, as intended, there was the "prone" effect with "Shove", then I don't find the mere adjustment of the distance sufficient. Then you would almost always use Shove to prone (for crits) + Attack Action, and to me that would be the same thing in green, as it is currently with Attack Action and Shove to death from cliff, lava, or whatever. It should be an action.
