I understand the frustration and problems some of you might have with the current announcements of stuff no one asked for and your worries about this possibly taking away resources from the "fixes", I will not argue againts your sentiments but I will give a possible answer as to why all of this "unnecesary" stuff is happening:
Yesterday
we got a reconfirmation that XV won't get a sequel, via Polygon having an interview with Tabata and he said something interesting during that interview:
In simple terms, they want FFXV to stay relevant for as long as they can.
I'm very sure Tabata and team are aware that delivering any of the "big fixes" (story and gameplay) fans want will take a lot of time and very surely know that this time gaps can kill fans interest/attention, making this "big fixes" probably not worth investing if they don't have enough people still playing the game. Making all this distractions (Episode DLCs, free updates, Collaborations, other extra Universe material, etc) is their means to keep people talking about FFXV.
I don't know how much resources this
Assasin's Creed x FFXV collaboration might have cost but, if they can do all this stuff while
potentially (we have no confirmation at the moment) developing any of the fixes promised in the last survey then one of the conclusions I can arrive is that
we perhaps are downplaying how much resources Bussiness Division 2 have at their disposal, I am not saying they have tons of gold saved on their pockets to spend, I am just saying they likely
have just enough to deliver everything/most of the stuff they have on their schedule.
That's my perspective on the matter. I recommend just being patient and have a bit of hope, just like some of you/us had during the VSXIII era and during the years, months and days leading up to XV's release date.