I agree with everything that you said Sciz, except for the 5% chance of making the week 1 roster.
Even though we drafted 2 RB's, I can see the possibility of them not being able to contribute as much right off the bat. Plus we don't even know what we have in either of them, as far as NFL concerns go. Yes, we have Woodhead and BJGE, but as you said, Faulk has certainly earned himself the 'right' to be able to compete and offers experience and an incredible skill set, blitz pickups, and a nose for that first down marker like no one else.
I think many may be a little premature in their assumption that Faulk will be gone. Many of us are incorrectly basing that on the recent draft, and Woodhead's good year, but we can't really predict what Belichick himself is thinking. I would have to guess that Belichick will give him the honor of staying around this one last yr, as long as he is healthy. We certainly have proven that the team is far from afraid when it comes to carrying 5 RB's, and the injury rate is high for the position.
Not that I am necessarily saying that you are 'wrong' or anything, as I would not do that, and the fact is that we simply do not know---but if I had to make a prediction on Faulk based on percentages, I'd give it at least 50%.