Football B Teams

So Andrea Villas-Boas has apparently suggested that Premier League teams be allowed to field reserve/B teams in the lower leagues. And it seems that David Moyes even tried to register an Everton reserve side in the Conference. Didn't Benitez suggest this kind of thing years ago (to some criticism, even ridicule)? Of course, that several people share an idea doesn't mean it's necessarily a good one, but it seems to work on Spain. Perhaps it's worth some debate...