Yeah, but he played for a losing team, so how could he possibly be any good?
... well, according to the logic of some on this board.
Seriously, I like the acquisition. People need to realize that upgrading is a process. You don't/can't plug-in pro-bowlers across your entire roster, but you do the best you can. If you can find a guy who is serviceable, comes to play, brings a good work ethic at a position where you are thin, then you bring him in. The Bills did just that and I applaud them. It wasn't intended to be a splashy signing, but it's an effort to fortify a position we are thin at given Butler's retirement. There are limits to what can be accomplished in free agency and you work the best you can within those boundaries. Nix is doing fine so far, IMO.