This is why the saying is for GMs, "if you listen to the fans then soon you will be sitting with them". As far as QBs who can make the Cowboys better, considering that among GMs coaches, and scouts (you know the professionals who study players and how to beat/value them for a living), Dak is a top 10 QB, you are probably looking at maybe 7-8 who are not a downgrade. I am also somewhat sure that the other teams with their top 10 guys are not going to be moving off of them anytime soon. That basically leaves you with the option of downgrading and there are not exactly a lot of teams that have gotten better after getting worse at QB.