Here's a question for those who want to trade Romo for the #1 overall pick then trade down for more picks. What happens if you make the trade and no one wants to trade up?

Some seem to think the Cowboys can come up with a bunch of picks in trade downs including a future #1 in 2014.
This draft doesn't have a coveted Andrew Luck or RG3 caliber QB coming out so if the Cowboys were to trade up for the #1 overall pick they'll very likely be stuck at that spot which means they'll end up with ONE player for Romo. Hard to get teams to move up and give you good value if they're not eyeing a QB.
Which one player in this upcoming draft is going to be worth your franchise QB who provides most of your offense? The whole idea is to try and improve not set yourself up for the #1 overall pick in 2014.