I think they'll both be motivated. Hendu finished last season healthy and being in the last year of his rookie deal will indeed look to kick it a notch for his big contract. I really like Williams and can see him rotating in. Akers and Hendu should split most carries and Williams will most likely come in on obvious pass plays since he's so good picking up blitzes. I have no skin in the game regarding who gets how many snaps. I just hope we continue to run enough to keep defenses honest.
With Stafford, Kupp, AR, Jefferson and maybe OBJ we might look to pass on every play. Hard to see anyone stopping us from doing so, but if we unleash our passing attack with runs, reverses and screens we will wear out any defense. As a matter of fact after building a big lead we should run most second halves and after a bunch of runs go up top to Tutu deep to end them.