Quick question: One thing that was mentioned by the devs in their recent video about EotE was you can play as a force sensitive exile in EotE, add some more force abilities once Age of Rebellion hits and then become a full-fledged jedi once Force & Destiny releases.
Actually, I could see this being handled pretty well by the career/specialisation mechanics. I imagine that AoR will have another universal Force related specialisation (allowing FSE to boost their ability, or AoR characters to start with a Force rating), and then F&D will have "Jedi" careers with specialisations. That way once F&D is released characters can pick a Jedi career (and free specialisation) to start as a Jedi, or existing characters (using the universal specialisation from EotE or AoR) can simply pick up Jedi career specialisations at a slightly higher cost to "become" fully fledged Jedi.