It figures that C-Mike wouldn't be the "cat's meow" that many of us hoped he'd be, especially so, since Seattle saw reason to render him as relatively inactive as they did.
All he has to do to justify his presence on our roster is to be the change of pace RB that we might require to spell DMC as needed. Obviously, if DMC gets injured as he has in the past, Michael would be required to step up and assume the lead role at RB.
Let's just see fit to appreciate what he affords without all the needless nitpicking criticisms we're seeing here. We're quite fortunate to see his presence at a time when it's somewhat desperately needed. A little patience might be in order, despite his perceived failure to fulfill unrealistic expectations.