THIRD TIGHT END
I have included the 3rd TE in both my"core" 21 man offense and in my 25 man offense (repeated below for convenience). I have always supported having a 3rd TE. That being said, the 3rd TE is one of the options for the last 4 offensive roster spots. We certainly have gone without. Last year, it was clear that we intended to carry a blocking TE. belichikc found the top one in the draft plus he found a top UDFA (a binkie for many).
THIRD QUARTERBACK
Again, this is an option. I would carry a 3rd QB. I have supported this choice in the past.
FIVE RUNNING BACKS AS OVERKILL
Again, the the 5th running back is an option, one that we have taken in the past. It seems that we almost always have injuries at this position, sometimes two or three during the season. It seems reasonable to have a backup. As of now, we have a fullback as our #4 running back. I had expected us to add a veteran backup, in case of injury. Instead we added on of then top fullbacks in the league, and gave him a 2-year contract.
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BOTTOM LINE
Where do we disagree? Maybe the disagreements came before I made the "choices" to fill the offense to 25 positions. I would note that the 3rd TE and 3rd QB are both included. No fullback roster is defined, although at present the 4th RB is a fullback.
I don't know what my choice is for the last roster spot usually allocated to the offense.
As of now, MY top choice is #9 OL (it almost always is). However, if Light retires, I could easily see us going with 3 tackles: Solder, Vollmer and Cannon. Obviously, there are other possible choices (5th RB, 6th WR, 2nd STer and we could give the roster spot to the defense). This decision need not be made until the last roster cut.
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OFFENSE 25 (could be 24 or 26)
QB 3
RB 4
WR 5
TE 3
OL 8
ST 1
Player 25 (most likely options include 9th OL, 5th RB, returner, utility player)