I support a 3rd additional retainer via quest. And to be honest the expansion is just the place to do it(infact I'd say every expansion should add 1). As an alternative to needing to store each and every piece of glamour gear - give us a gear and weapons book where we can collect various items we only keep for glamour - aka we obtain the gear it unlocks in the book and then we can use the book data to apply to glamour prisms(should take less DB storage as well since it would be just a link to the base item instead of having spiritbonding and other metadata attached).