MNF needs something groundbreaking and risky to get its luster back. I think if they do procure Romo, they need to cut out the play-by-play announcer and have Romo paired with another color analyst.
ABC/ESPN already does something like this with the CFP games on their sister channels with the coaches and reporters just talking about the game as it happens.
The reason why Tony is great is because is commentary is everyman but with obviously superior knowledge. He explains just enough to enlighten folks without going over their heads. His personality is light, fun, and charismatic.
Picture watching the game in your mancave with Tony. That's the idea I have. Without him literally being in your house, Romo and his co-analyst would talk the game, get excited, and explain nuances.
I think it'd be great. Gruden would've been the perfect guy to pair Tony with. Obviously Jon isn't available, but what about someone like Brees if he retires? I'm sure there's better choices, but it definitely needs to be one to equal Tony's charisma.