A rookie head coach, so we will find out about his clock management skills, his replay judgement, and his people skills. There is no way he is not an upgrade over Fox on all three. He is not a rookie offensive coordinator, which is why he is here. the design of the offense and play calling will not be a problem.
Robinson will be fine, Anthony Miller will be very good, and the RB's will be great.
(standard NFL disclaimer) Barring injuries the 2018 season is all about dear sweet Mitchell, I'm not saying he needs to make the playoffs, but he needs to play well, much better than last season. 2017 all the excuses were in place, no weapons, no game plan, and that was true. 2018 weapons and a game plan are in place, no excuses.