I won't lie NA is looking like the 2nd weakest region going into champs. EG is practically doomed because they got 2nd place at a international event, and NRG just don't seem to have that star player who provides them with the much needed fire power. Unless Ardis re FPX form and Crashies starts pulling clutches out of his as I don't see them making top 4. Kru (I think they win or at least I hope), EDG,FUT, have some insane fire power. Fnatic PRX Loud have fire power with amazing strats. This is all assuming Navi,DRX and zeta dont return to their prime forms where they were also hella scary.
TLDR NA IS DOOMED, EVERYONE LOOKING STACKED ASF FOR CHAMPS.
edit: I also forgot about liquid who r also insane.