I have a feeling the one job quest is all we get. It just kinda wrapped up some of the jobs previous loose ends. MCH in particular just kinda pushed the new NPCs to the front as finally being able to hold their own. The GNB one though felt like it opened the door to the next chapter in quests.
I think the role quests were an alright series, but not really a good replacement. I understand if they couldn't bridge the gap between the Source quests and somehow having in continue in the First, but i feel the lv80 quest could of been given out at 70 and then meeting the appropriate First counterpart at some point. I'm really curious if the First has Summoners and how they do things (If Bismark is a fae in this realm and presumably not using "vast quantities of aether" like every other primal, that seems BIG for a summoner) or Red Mages, or even classes at all. Seems like a huge missed opportunity to expand the lore of the various classes without all the baggage from the Source.