I'd give up a 3rd for Romo right now. Romo to Sammy would be fun. Maybe we get lucky and he stays healthy for a year. I'm sure we could develop an offense that could minimize QB hits, especially with our run game.
Strong run game and Romo play action is a recipe for success
The problem, from a team perspective, is that contract. If he retires it frees up a bunch of space. If he decides to come back, the team really can't count on him but he still carries a big contract. Tough spot.