I always enjoy when Pro Football Focus (PFF) provides their insight on players and I actually like that they've turned their eyes on college prospects. If you understand the context of the scouting, then you can use it as a piece of the puzzle. Here's a link to their first round mock draft and it's a doozy.
First off, there are far more surprises because they're basing it off of their own internal scouting instead of measuring it against other agencies. If they consider a player a first round prospect, then the fact that other scouting agencies rank the player in the 4th round won't alter their mock. It's coming from PFF's perspective.
PFF has Rutgers wide receiver Leonte Carroo (90th in CBS Rankings), Mississippi State defensive tackle Chris Jones (91st), and Notre Dame defensive tackle Sheldon Day (108th) in the first round. They consider these players to be some of the best in the country, and these sorts of wild cards create a fun trickle-down effect with other rankings.
For instance, Alabama defensive tackle A'Shawn Robinson (9th), Clemson cornerback Mackensie Alexander (10th), Memphis quarterback Paxton Lynch (17th), and Ohio State offensive tackle Taylor Decker (20th) are all still on the board.
The Patriots need an offensive tackle and, unlike other mock drafts, this waterfall of events would lead to a more likely scenario where a viable offensive tackle could be available at the bottom of the second round.
In another change, while there are certainly still some wide receivers on the board, players like Texas Christian's Josh Doctson, Baylor's Corey Coleman, and Oklahoma's Sterling Shepard are gone, which means that the likelihood of a top receiving prospect falling to the end of the second round is far less likely.