Honestly, if we DO fight Azadaja that's more fodder for my pet theory that they're building up a (Orthos Spoiler)
The First Brood Ultimate fight, considering we've now fought Nidhogg, Hraesvelgr, Midgarsormr, Bahamut, and Clone Tiamat. Now I don't mean Lore-wise building up to it, rather slowly figuring out mechanics for each dragon of the first brood in case they do decide to design that Ultimate
For MSQ patch-content, my best guess is there won't be any indication of where we're going next or what the next story arc will be until 6.5 or even 6.55. Obviously we as players will know from expansion announcement at FanFest, but we the players knowing WHERE doesn't translate to WHY.
(Still holding out hope for Krile to rise to prominence as we explore the New World and she takes up Native Geomancy which is closer to a more attack-based Conjury and just coincidentally happens to share a name with Hingan Geomancy)