I wouldn't even give up a 4th for him either. That's way too much. Personally, I believe that Seattle has their best poker face on. If we want him, we can wait it out and they will most likely cut him eventually. And, one of the parameters for him to come back would definitely have to be coming down on that contract of his. He knows that as does the organization.
Once again, this is a business (as the proponents of the various trades over the years have pointed out). I just don't see how Branch not earning the big contract he got in Seattle has affected you so much as a Pats fan. Personally, I could care less. He wasn't wearing a Flying Elvis on his helmet when he was out there, was he? The only thing I care about is if he's actually capable of playing a healthy season if he's brought back. That's where my doubts lie.
Well, for one, we don't know if Welker will even be available in Week 1. If he is, I highly doubt he is the same Welker we have grown accustomed to. So, not only would this (or any other receiver signing this team makes over the course of the offseason) be insurance for not having to rely a second year former quarterback and a second year receiver with prior knee issues, but it would also be an improvement over a career special teamer who saw the vast majority of his "big" catches become the result of pure luck. Either way, if he is brought in, it would look something like this...
With Welker: Branch-Welker---Moss, Branch---Welker-Moss
Without Welker: Branch-Edelman---Moss, Branch-Edelman---Moss
This assumes that Tate is kept on somewhat of a leash to start the season. It leaves out the possibility of him progressing to the WR3 role.
You don't give Branch enough credit. Sure, Tom is GOAT candidate. However, it wasn't all him in that '04 season and Super Bowl 39. Branch routinely saw double coverage in that game and still had to get open enough for Tom to get it to him. Brady is great, but he isn't great enough to actually complete a pass THROUGH a defender. Branch had to be there. To put it simply, they both benefitted from one another, though I would have to agree that Branch benefitted a little more from the relationship.