DolfanISS
Perennial All-Pro
First off, if Carroll or Wilson are seeing all that much time, then we've really had a problem. Second of all, I know of no reason why Will Allen would be that much better at his age.
So who plays the boundary if Smith is moved inside to cover a TE for a key 3rd down? What if the Pats go 4 or 5 wide? Last year I seem to remember our staff having more faith in 36 year old All Harris, until he got hurt, than Nolan Carroll when they did these sort of things. Allen is 3 years younger than Harris and both were coming off serious injuries. I agree the 4th CB won't be a staple on the field but he will play, we have always gotten them in their before.
Maybe these new guys are better than Allen, maybe Allen will be re-signed next week. time will tell.