04-20-2016, 01:15 AM
I don't know why I didn't think of this before, but I could treat the crystals as Materia of sorts, using the MXP rules in place for the leveling of the subclass. Require an hour of meditation to attune to the crystal, and it would gain the 10% of any combat exp gained. Give multiple crystals for another class, so while my example Ninja would have Blm initially, perhaps at a later point he picks up an Archer crystal and by attuning to it would lose access to the Blm abilities, and instead gain Archer talents, with this crystal gaining MXP (or CXP) unlocking more Archer perks...