Even if BLG looked strong vs NRG, they aren´t likely to win against teams like JDG, TEC, EDG, FPX or TE in my opinion. Could still happen but I doubt it.
FNC and NaVi have a low chance of qualifying together, because GROUP B winner plays GROUP C winner, and NaVi most likely wins GROUP B while FNC most likely wins GROUP C.
Unless Ange1 tries to cook and lose on purpose to go to play-ins, win play-ins, and play FUT (most likely GROUP A winner).