As far as Zeke is concerned, there were only 9 backs who rushed for over 1,000 yards last year. Zeke was less than 100 yards rushing for the season than 6 other backs.
Obviously teams have gotten away from having the run game the focus of the offense. Bucs' top rusher was actually a yard less for the year than Zeke, and they won it all.
Considering the loss of Smith and Collins for basically the whole year, and Martin for several games, I don't think it's at all unreasonable for Zeke to get back into the top-3 rushers this year. And that's plenty good enough, he doesn't have to get 1,500 yards or so, like blueblood70 said, the run game has to compliment the passing game, and Moore doesn't seem to know how to do that....