Kidding. Gailey is just another in a long line of retreads that NFL owners seem to always be so in love with. I really like hires like Harbaugh and Schiano. Don't have a clue if he'll do anything but they're coming off 4-12. How bad could he be?
Well, depending on how much freedom he'll have with player personnel, you can fuck up an NFL franchise for quite a while with bad drafts and trades.
Think about it, you get, depending on how you've traded picks, roughly 7 rookies a year. 4 in the top 4 rounds. 4 players that are LIKELY to contribute, and 3 more that are probably back ups, specialists, projects, that maybe won't even make the roster. It ain't college where you get 25 each year and hope 15-18 contribute.
Then maybe you pick up a FA or 2.
The margin for error is much closer in the NFL when it comes to evaluating personnel.