Considering they've planned their updates out as far as March, they're pretty much saying nothing more than "We've thought of doing this, however we currently have not allocated the time to implement it". They've got a whole new zone planned so I imagine they're quite strapped for extra time.
Best case scenario they change their mind, but I don't think they'll buck the trend of Relic weapons representing each weapon type rather than job - the furthest they could go I imagine is adding a Relic Grimoire and Animator for the ammo slots of Scholar and Puppetmaster. Adding what would effectively be copies of existing weapons just to make people work harder is highly unlikely (and when I say make people work harder I mean us and the developers).
