Price for Disadvantage: No Skill Defaults

So, in designing a race (Droids) I've decided they have no skill defaults in things they aren't programmed with. So what I'm looking for a cost for the following traits:

No Mental Skill Defaults
No Social Skill Defaults
No Physical Skill Defaults

I'll certainly also accept small grouping "No Default" Disadvantage costs, frex, No Combat Skill Defaults, No Artificer Skill Defaults, etc.

And before we go down the Anti-talent route, I find 'Anti-talents" in general to be a bad fit every time a Player mentions them. However, I'm open to hearing arguments for them being applicable as a racial trait.


Yes, I know a lack of Physical skill defaults might best be represented as actually missing the limbs to perform the task, and I'll admit I'm having problems conceiving of how a Droid could have manipulator limbs but not have a physical skill default, but I'm just covering my bases here.

No one else has ever given thought to this or has any ideas now?