They only have to worry about OL. QB probably won't be an issue. Most skill positions are back plus talented additions.
Washington's head coach was siest a coach there so that's usually a smooth transition. Yeah he's replacing Petersen, but still. The head coach needs immediate respect and the players are behind him because they're familiar with him.
Utah's path isn't really any easier when you consider that they lost more than most of the programs they'd be trying to beat.