Sorry to repeat from the other RB thread but it works here ...
Too often, this staff worries so much about perfecting player technique and all-around development that they overlook (a.k.a. squander) raw talent / power / athleticism by forcing square pegs into round holes. Too often, they worry about what the player can't do, in the general game of football, instead of focusing on what they can do, even if it's a limited skill set or role. The result, a 235# athletic, fast RB, that would perfectly fit your evolving identity of a punishing rushing team and greatly contribute to your team's success via that means, sits idle because he can't master the blitz pick-up. Meanwhile, you continue to use average, yet well-rounded, guys in your rushing game for average / below-average results. But hey, IF we decide to pass, that guy will probably be better at blocking.
How about you let your best RB's run, you let your best blocking RB's pick up the blitz (less and less of a need because your strategy shifts to power-rushing), you let your fastest RB's play in space, etc. Stop worrying about "the tell" and just let those guys that are really good at what they do and are really good at what your strategy says you're going to do, do it in situations that call for it.
Going forward, as Iowa continues (finally) to actually play to it's strength and Badgerfy it's identity -- an overpowering OL followed by enormous RB's that simply pound you into submission -- it would be a complete coaching crock if Daniels doesn't take more and more of Bullock's carries and some of Weisman's. The ONLY reason Daniels should not play more is if he tends to fumble. Otherwise, if Iowa truly plays to it's strength, they will be rushing the ball at least 65% (50 carries) of the time with Weisman and Daniels getting some combination of 40+ of those carries. (Ruddock will probably get 3 or 4 and that leaves a handfull to give to Bullock and Canzeri, for a change-up and taking a shot at a maybe breaking a home run.)