Make Combination Adept & Critical Hit skills child of Combination Attack.
Those skills exist solely to improve Combination Attack, so it doesn't really make much sense they are on a tree of their own.
Skill: Combination Adept & Critical Hit rebase
Skill: Combination Adept & Critical Hit rebase
A Parrot with a Blade - Melee/Touchcaster Holy Champion || GrayScimitar - Heavy Sword Tlac IB || RustyWire - Gunwiz