This situation reminds me of the old joke about two guys seeing a bear in the woods. One worries about out-running the bear. The other knows he only has to out-run the other guy.
This 'thin' stable of running backs includes 4 big powerful guys any team would want and a smaller guy with good hands, decent speed and lots of experience. Power, speed, vision, agility and hands are what Meyer needs and I think he has them all. Why not use them all in situations appropriate to their individual skills? No more little guys up the middle. No more 5-star RBs playing LB. Urban and Herman will have big guys to run up the middle, speedier guys to attack the edge, and pass-catching runners in the slot. And our QB is a pretty good rusher in his own right.
And that says nothing about speedsters like Corey Brown and Devin Smith -- even Armani Reeves -- who could get some touches if we need even more speed outside the tackles.
I hope we see them all run this Fall. This is clean-slate do-over time. That can be great for these young backs and is definitely great for the new staff.