good luck....
Ha. I love this kind of in depth analysis in March! I'll bite...
Bell tore his MCL and PCL, which IMO, is better than ACL which is no longer the death knell it once was. So yeah, I feel good about Bell returning to form. The recovery time is the same as ACL, though, so he should be fine for week 1.
Martin is poised to be the top paid RB by far this offseason, so somebody is going to be giving him the ball a lot next year. Staying in Tampa is most likely, and a pretty decent outcome, but I like his chances of catching more passes if he changes teams. Either way, Martin is in no way more of a dice roll than almost anyone else. I'm no big Martin fan, though. I'm not overly impressed with him as a runner, but volume is a big part of fantasy. Also, he admitted in interviews that he wasn't dedicated his first three years in the league. He pulled his act together last year. I'm betting that was a maturity thing and that he'll be fine next year.
As for Morris, I guess I'm the opposite. I've always been a fan, although, I've rarely found him on a team of mine (largely because I pretty much expected the redskins to implode at any moment during his heyday). The guy obviously has running talent. I agree the team tried to move on to Matt Jones last year, but that was a disaster (3.3 ypc?). In fact, the whole running game was a disaster, but ol' Morris still showed better than Jones. His first 3 years were quite impressive (yet you are only focusing on last year), so I'll give him a pass for last year considering how bad everyone else looked behind that line. Don't be the guy who misses out on quality players due to "what have you done for me lately". It's funny how you assert that more teams are taking a RBBC approach AND that catching the ball is essential. Only one of those two can be true. I'm thinking of Ivory/Powell or Blount/Lewis type of RBBC for Morris, if indeed he can't actually catch. But... look at Ingram. Everyone thought because he didn't catch balls that he couldn't. Then suddenly he went from catching no passes to catching a ton. I always knew Ingram had passing game skills, though. I don't know that about Morris.
Blount is a talented guy. He'll be 29 this season but with less than 1000 career rushes. I think the highest probability is re-signing with NE, but if not, I think he'll find a role elsewhere as a bruiser. I'd be happy with 6 TDs from my RB4.
As for the grade, like I said before, it is a relative thing. Given Bell's talent and situation and just the other guys' talent, I still think it is the best squad in the league.
L.Murray... I described him as fringe because he literally finished on the fringe of the top 10 in PPR scoring, just a point or two ahead of Ivory and Ingram who played less games. It wasn't meant as a slight. I thought the word "fringe" quite fitting in this case, don't you agree? Just a couple more snaps from a few guys and he's in the teens. He had over 300 touches, so I don't see his role increasing next year. I find the Raiders' offense interesting. One could easily argue that they overperformed last year and could struggle to maintain that. I honestly don't know what to expect, but I wouldn't bank on them doing much better than they did in 2015.
My worries with CJA are the offensive line and QB. I'm not positive Brock is the answer or even that he'll be there next year. They also need to break the bank to bring Von Miller back, so I'm not sure how much they can/will invest in the OL. As a player, I really like CJA. As a FF player in 2016, I'm wary. Also, I anticipate Hillman being gone so who will they bring in to compete for touches? What if Kubes brings in his boy Foster? Things could get murky, although let it be known, I think CJA is better than Foster at this point in their careers.
I agree that DeMarco isn't going to get cut due to the cap hit they'd have to eat, but if you think he's the best back on the roster then you're in denial. If you don't think he's the best back on the roster then why'd you spend such an early pick on him? It's kind of a catch-22 for anyone who drafts him this year. Mathews' salary isn't very significant and he was by far the best back on the team last year, so I don't expect him to get cut, leaving an interesting situation for the new staff. I think Mathews in the RB45 range is a better value pick than Murray at RB24.
Karlos is kind of like the Ryan Mathews of Buffalo, except McCoy still looked good (4.4 ypc) whereas Murray (3.6 ypc) looked like crap. Karlos should get more snaps, but I don't know that he will. I really like Karlos for 2017. This coming season, due to likely light workload, he's probably a run of the mill RB4 unless McCoy gets hurt.
Like you, I'm not big on grading these teams, but I'm just following the format others have set. Unlike you, I don't think L.Murray and CJA hold a candle to Bell and Martin. But that's why they play the games, right? Good luck to you!