I think the 5 leagues is a good idea, especially as people have mentioned with the increasing numbers of non-league clubs being pro anyway - but I am 100% against prem sides having "B" teams in the same league system. That's what reserves/u21s are for! I get that reserve leagues aren't as competitive and so might not be as good for player development as the FL, but I just can't stand the idea of the big clubs having 2 teams.