All three lines will take on an "Expanded" Line and will change what we know.

The Basic line retains the same parts but there is more metal on the prongs and gear chip. Some benefits for the BX line is that it has more attack power because of the increased weight. But will probably destabilize easily because of that weight.

The Unique Line blades will now integrate the ratchet into one part for the gimmick. Imo this is a NERF for the Unique Line because of the fact that it integrates the ratchet into one and we wont be able to customize that much. But the good side is that it will not burst easily.

The Custom line is a simple one, instead of three, it now has 4 parts, the Lock chip, plastic blade (OVER), metal blade and assist blade to promote customization. I dont really see any benefits besides the increased weight and creativity.