I think as long as we don't run him into the ground, we'll be in good shape. This year we have FredEx, Brown, Williams, and Boobie as possible change of pace candidates. As long as our other guys run well enough, we can distribute nicely to ensure he has a longer career. Having RB depth is really important if we're going ground and pound.
I hope that Brown proves his worth during the off/preseason, if we can keep him on board, and have Brown/Williams as young depth for a few years, it'd be great. Unfortunately that'd likely mean a cut of Fred, so I'm not sure how I feel about it.