In finalizing the i20 skill replacement, the full suite of capability failures is required to assess skill outcomes. This is another aspect to reflect the “Gritty Realism” approach to Incarna™
Assumption: Always get attribute bonuses… This just makes it easy.
How to simulate/explain that some classes CAN’T have proficiency? There is no way, but adding Kinetic Aptitude 1 minimum requirement for martial weapons will ensure some penalty. Clerics of the war domain, etc. gain a ‘martial instinct’ capability that allows them to wield martial weapons without the kinetic aptitude requirement using the guidance of their god.
Unfamiliar = No skill/proficiency level adjustment to outcome; Has a frame of reference but never observed or used in the way being attempted.
Clumsy (not meeting minimums) = No major result outcome possible; Familiar and skilled, but lacking some minimal capability.
Unproficient = Unfamiliar + Clumsy + Cannot be used in maneuvers; Has a frame of reference but no familiarity or skill.
Alien = Unproficient + Maximum bonus for any attribute is Sanity adjustment; No frame of reference, familiarity, or proficiency.