I'd totally buy that they didn't even get to do half of what they wanted for Adoulin. The whole storyline for Adoulin felt like it only just finished introductions and then just ended (The quests they've added since then help somewhat, but I can't but feel that they originally intended to have all that weave together into the main story for something much bigger).
Also I guess it's possible they want to retcon Cait Sith and co. as Avatars, but it is kinda weird considering how the storyline/lore guys are probably the few we have of the dev team who are from the game's launch. They seemed to be very careful in the past to never outright refer to Cait Sith/Atomos/Hades as Avatars so its odd they'd change that now.