If they're going to make a splash trade, the guy I want is Crosby. He will have more impact on this team than anyone else available, FA or trade. Perfect attitude fit, wants to be here, never stops working, and panics QBs. He's an every down player who can play run as well as pass.
For IOL, the best out there by far is Tyler Linderbaum. I don't think there's a close second, honestly, though there are a lot of "acceptable" options. If the Pats need a stopgap (as in, if they believe in Campbell and Wilson), the answer could be this year's Joe Thuney: Joel Bitonio. 34 years old and still very, very good, and very, very smart.
Tight end? Otton. No close second for me, because he's a more-than-willing blocker, and he'd complement Henry perfectly.
WR? Shrug. I think Pierce is going to be way overpaid. I like Brown, but if you're using that kind of draft capital, get Crosby, please. I suspect it's possible that Diggs, if he gets through this court stuff, will come back. Wouldn't expect the Pats to hand him $6 million, then lose him to prison. I don't think he's pissed about it.
Safety/ Wouldn't mind Hawkins back. Thought he played well. I'd love Cross or Bryant, yes indeed.
LB: Lots of good options. I love Devin Lloyd. if you can't get Crosby, that's where I'd spend some money. There are a lot of "good" LBs who would fit in the the group, though.