I agree that he will likely be a rotational RB in the sense that I don’t see him as a 25-30 carry back in the NFL. But when analysts say “high end rotational RB”, it is typically in reference to your traditional bell cow type backs who get substituted for a series or two a game. IMO, he & Pollard are not that type of back. They are multi dimensional backs and should be used that way.
Pollard had almost 1400 yards on less than 15 touches/game and was underutilized in the passing game. With Zeke gone, there are similar touches available and that is in a more traditional rotational role like last year. Keep them both on the field together more frequently and leverage their expanded skill sets and you are adding a big time playmaker, addressing some of your receiving deficiencies, and adding a degree of creativity to your offense that Dallas hasn’t employed in years.
RB wouldn’t be my first choice either, mainly because we didn’t see Pollard used that way. But if McCarthy would leverage them according to their skill sets, I can see a lot of possibilities.