I really like Hayden with the ball in his hands but I really haven't paid much attention to his blocking, although I do recall a couple of badly missed blocks when he was in there. And that may be the rub. If he had not been blocking well, we should not see the field as he becomes a liability against a good defense. He will either be running the ball or will be replacing a good blocker in exchange for one that does not do so well.
And if blocking is the issue, he will not be drafted into the NFL. Running the ball in the NFL has taken a back seat to throwing the ball and a back that cannot block is taking a roster from someone that can.
It is concerning however that the backs are getting banged up as bad as they have been. Fortunately, it has not yet cost them a game. But if they are not ready soon, the weather will get much worst and the passing game may not be able to bail them out. If that is the case, Hayden's RS will be burnt quickly.