I think Williams has great speed for sweeps, as well as good sense to cutback and make a tackler miss. You can't teach things like that. Williams provides another change-up in the running game. Too bad for Simonton, but Williams is just a shade quicker.... Keep Williams for punts and kick-offs, too.
I think they'll keep 3 RBs and Lawton, let Zolman go, so they can keep 4 tight ends.