Actually, Romo will do fine, as quarterback. The worst thing they could do is draft one. They just need a different holder for placekicks. It's like needing a new long snapper. If you've got a good one, you'll virtually never hear of them.
I think people will be surprised with how well Miami's Cleo Lemon does next year (assuming he gets a chance somewhere). The Chargers had him for a couple years and he was always the most impressive quarterback in the preseason - which never means much, but this is when they also had Brees, Rivers and Flutie.