I'm not letting my Commanders fandom effect my response to your post. My response is strictly a football opinion, for the record. Tony Romo has been at times one of the best QBs in the league and at other times, the worst nightmare for the Cowboys. He leads a team back playing with broken ribs, but goes out healthy and struggles against teams you should destroy.
He puts up great numbers during the regular season but typically struggles in December and post season (with exception this year, he was on fire until last night). With all that said, he's not getting any younger. He's going to turn 33 next season. And honestly, he is not worth a first round pick imo, much less a first along with a 3rd or 4th.
Most teams are not going to give up that much for an aging QB, not with the success rookie QBs have been having since Flaco and Ryan, Dalton, Luck, Newton (only one not to make the playoffs), RGIII, Wilson.
McNabb was 33 years old when Philly traded him to us and they only got a 2nd rounder and a conditional 3rd/4th round pick the following year. And you can say what you want about McNabb, but he had far more success with less talent, especially in the playoffs. There may be a team that bites and gives up more than they should for Romo, but my guess is it wouldnt be higher than a 2nd round pick.