According to Bill Connelly at SBNation, Wake Forest ranks 7th in the NCAA in returning production. Without getting too much into the stats behind it, last year he devised a different way to look at returning experience, and it showed that teams with a lot of productivity returning usually fared a lot better than the year before (shocking, I know).
Especially important to note about his findings is that when there is continuity at quarterback, receiving, and secondary, teams fare a lot better, while there is almost no correlation “whatsoever” between offensive line career starts and improvement or regression of the line.