Well, Garrett Mills was marginal enough to be put on the practice squad, claimed by the Vikings, and put together seven receptions in three years. So I'm guessing he wouldn't stand out on the Bills either.
But I mean, I'm not looking for the Pats to start going 7-9 or anything in the near future, but they're going to live and die by the same corps they have all the way through: Brady, Wilfork, Seymour, and the line. As they start aging and acquiring more injuries, it's not clear the replacements have arrived, and the Pats may fall back into the pack with 9-12 win seasons.