The Patriots are basically weak at one position, and that position happens to be the most important position in the game. Right? Assuming that's correct, my conclusion - as a fan of one of the teams that could be a trading partner with the Pats on Thursday night - is that a) the Patriots would be nuts not to overpay for a top QB prospect they like, and who Belichick can mold into the type of QB he wants, and b) every team that might trade with the Patriots knows this as well and has the leverage to demand 120 cents on the dollar. So in that hypothetical PFF trade, the Falcons absolutely ought to demand that sort of haul...and I think the Patriots absolutely ought to pay that sort of price.
I mean, by the Stuart chart, it's actually 200 cents on the dollar - 4 is worth 25.8 & Patriots are giving up 51.7 to get there.
This leverage against the Patriots stuff is whatever. The Falcons have as much leverage as the highest offer is worth more to them than keeping the pick. Teams work in their own best interest - not for the sole goal of screwing over the Patriots.
If the Patriots offer 180 cents & no one else is offering more than 160, the Falcons can either take their 180 cents from the Patriots, screw over their franchise by taking a worse deal, or draft a player (*ACHOOkylepittsACHOO*).
If the Patriots value 1 of Fields/Lance at that level & both are available, then I'm sure they'll make a competitive offer.
If they value both, though? Who knows.