I don't recall too many NEP formations where they go 4-5 WR and have two WRs lined up working the slot. I'd think you generally only want one offensive body running routes in the shallow center of the field which is where most of these guys operate, but I'm sure some ex-HS football players can correct me.
I think it would depend on how you're viewing the definition of 'slot.' In your version, it may be more incorrect than correct.
In 4-5 WR sets, only 2 guys can be on the line of scrimmage at once, so in essence there is more than one 'slot' WR on the field at once.
If your argument was that the NEP offense already runs a lot of shallow to intermediate routes, and the emergence of the 2 TE's has only increased that, then your theory would possibly hold more water. With a plethora of guys who tend to have a lot of the same skillsets (as far as running certain routes and catching the ball), Edelman apparently is not one of the better WR options, at least in the mind of Bill Belichick anyway.
I will give you the fact that he does look like he plays with a lot of heart and passion, giving his 'all' on just about every play. He did look pretty good when taking over Welker's role in the 2009 playoffs, so one would think that he may be able to replicate that performance to some degree---but not anywhere on the level that Welker himself brings it. If Wes was gone or hurt, I would certainly want to see Edelman given another chance in that role again; but no one knows if that will ever happen, or if he can carve out a niche for himself with some other effective WR role, which seems doubtful with his skillset + the level of competition in front of him right now.
Personally I think he stays, and is a typical 'value' Belichickian player; one who offers versatility in all 3 phases with a low cost to boot. However, 'where' he is slotted position-wise, and how much he contributes is certainly up for much debate.
As AndyJohnson says is so many words (paraphrasing) "Edelman is kind of like a jack of all trades, but masters none." In other words, he can offer something as one of the roster #45-53 guys, but don't count on him to excel or contribute too much. I do think he is an effective punt returner, but that alone probably isn't enough to win over a job, as someone else could do it--to a lesser degree. I think his heart, committment, and versatility win him over a spot again this year, but I really don't want him as a DB again.
I think he stays without really ever being on the bubble as some think, but I can also understand the debate with the heightened roster competition. If Welker goes (which I certainly hope does not happen) then Edelman may be re-upped next year, otherwise I really think this may be his last yr here.
Keep in mind that I do appreciate him, and I am a Edelman supporter, but the level of competition has certainly increased in certain areas too.
