A question I'd like to ponder to people is this, in order to upgrade their skill, acquire a talent, a specialization, learn a Force ability, or upgrade, do your PC's have to do something mechanically in game to represent them learning these new abilities.
I'd be very interested to hear what people think on the subject and suggestions.
So far I've just been allowing them to spend their XP as per the RAW and not considering the narrative of how they learn these abilities. This is especially true for Force Sensitives.