Haven't seen either mentioned during the many discussions on how to help make AC meaningful, and I'm suprised at that, maybe they just seem too obvious. They are exactly what it says on the tin, two simple additions that could make building for AC a lot simpler, but that are completely optional and unneccessary for those nt building for AC. Inspiration taken from an existing mechanic - Racial Toughness.
Racial Dodge I
Usage: Passive
Cost: 1 action point
Spent: 7 action points
Requires All of: Dodge
Available to level 3 (Race)
Grants you 2 additional armour class if you have the Dodge feat.
Racial Combat Expertise I
Usage: Passive
Cost: 1 action point
Spent: 7 action points
Requires All of: Combat Expertise
Available to level 3 (Race)
Grants you 2 additional Armour Class whilst Combat Expertise is active.
Same progression in AP cost/level as Racial Toughness, though possibly acting as an alternate (Dwarf/WF only get Dodge/CE up to II, whilst Halfling/Elves get IV, opposite of how Racial Toughness works).
Simple, uses and existing mechanic, and whilst not completely solving the issue, makes building for AC a lot easier.