I wouldn't base my predictions on "stranger things have happened".
Us getting a 4th is a little more on the real side.
You're going to tell me that a team that trades down from a top 7 pick is only going to get a 4th rd out of that mess?
Every team that wants to move up always have to give up atleast a 2nd rd with their current spot. We gave our 2nd to Philly to trade back up for Otah. We gave was it a 1st to take Everette Brown in the 2nd. Heck we had to give SF a 3rd next year to take Alexander in the 4th.
You're completely lost on the trading cost whatever its call again. Before the draft this year some people gave some great info on how the trading process and cost of trading up works. Go look it up! I can tell u it's not no 4th rd in return trading down that high. I'm sure all 32 teams wouldn't hesitate to think once about trading up if the cost was only a 4th rounder.
FYI, Dallas gave up their no.14 and no.45 to trade up to no.6 with TB. Nothing strange bout it.