That's going to step on toes in both parties, and it has doubtful constitutionality.
Does the Commission wait until a bill is written and ready to submit to the Executive before coming down and excising portions of the bill? Then it would have to go through some kind of reconciliation process again, or it would be protested as an infringement on the Executive Branch, to name two issues with it.
Would the Commission have the power to override committee decisions before a bill is sent to the floor of the House or Senate? How could that work?
Would this commission have the power to interfere with amendments introduced on the floor?
I don't see where giving a minority of Senators or Congressment this kind of power is wise, when we already can't trust the bastards to obey the same laws they impose on us.
Does this Commission just make "recommendations"? What's the point in that, if there's no authority to enact them? Private watch-dog groups already do this.