This.
Asking Tony not to ad-lib and create is like telling a young Nolan Ryan, "Hey, maybe you should stop throwing the ball so hard."
Once you do that, why even keep him on the team? It makes no sense.
And, with no playmakers among the receivers, if Romo doesn't scramble and buy time, then there's not going to be any kind of a consistent passing game. Yeah, Aikman struggled without a true number one, but he's as relevant to Romo as Bird was to Jordan. I remember Favre putting darn good numbers with receivers who were really nothing special; a playmaking QB who buys time for WR's to get open can do that. A pocket passer can't.
Impulsive may not be the best word choice, but they need to roll this kid out, keep him moving, and let him have some fun out there. Trying to get him to play like Aikman is as mindless as asking Troy to be Steve Young.
Besides, forget Felix, this teams only chance to make the playoffs rides on Romo's ability to be a playmaker. If they decide he can't do that effectively, then they should get rid of him. It was the only thing that ever made him special.