Just a little idea bumping around my head and preventing me from sleeping.
Pure Skill Check d20 System
All stats are:
Skill Ranks + Ability Modifier + Equipment Bonus + Feat Bonuses
“Combat Experience” uses the same skill ranks for 2 different skill checks.
Combat Experience+ Strength + Weapon (+5 to check)
Combat Experience + Dexterity + Armor (+1-+3 to check) + Shield (+1-+3 to check)
To attack someone you roll 1d20 + “Offensive Combat” vs your target's “Defensive Combat” + 10. If you get higher you hit. The amount you succeeded by is the damage you deal them.
Magic is a skill check to cast the spell vs. the target's pure Defensive Combat (not +10) or the target's Magic (with the +10) if they have the feat “Counter Spell”.
-You can only put ranks into a skill equal to or less than your character level.
-Other bonuses (ability modifiers, equipment bonuses, feat bonuses, misc bonuses) can give you a larger bonus than your level.