Everything on a character sheet could be reduced to Skills and Feats:
- Take hit points and armor-like bonuses to armor class and replace them with a damage save mechanic.
- Take dexterity, size, and related bonuses to armor class and replace them with a defensive value.
- Treat BAB as a skill (DC based off of the defensive value).
- Treat all saves as skills.
- All modifiers to skills are provided via Feats.