Summoner and Sorcerer Quan are where they are because they have some of the most insane offense in the game. Their weakness is defense, so it forces the opponent to go on the offensive, which is where Quan outguns almost everyone. That's why I believe Quan Chi's weakness isn't as easily exploitable as it may seem.
Hunter Predator is where he is because he shares Quan's weakness of shit defense without smothering offense, Predator's base normals are pretty meh, and his rushdown and zoning both aren't really much. Not only can't he wake up, but Predator's back walk is absolutely terrible. His setplay took a hit with two hit armor becoming the norm but it's still pretty strong. Which is why he's not in C tier, I believe the character fits the description of where I have him.
Considering moving up Buzzsaw Lao, Spectral Ermac, Hollywood Cassie, and Racenous Mileena.
Considering moving down Kenjutsu Kenshi, Pretty Lady Leatherface, and Necromancer Shinnok.
Also Cyrax is staying where he is, armor and tech roll buddy.