File:Kensai enhancement tree.png

Summary
Full of red icons. If you have a capped Fighter with Greater Weapon Focus, Greater Weapon Specialization, Improved Critical, Exotic Weapon Proficiency, Dodge, and Mobility, please, update it with a fully selected tree (+1 DEX, +1 WIS. +1 Str is implied for being the class primary atribute)

Source:
Enhancement tree images