I'm hoping at some point to get back to it, but I'm in the final stages of a full-time doctorate whilst working a part-time teaching job so time for games is limited. Which is particularly annoying when my tastes have shifted quite strongly towards long, involving games. My 3DS is getting a lot of love thanks to Fire Emblem Fates (100 hours plus so far) and I've just started Monster Hunter Generations (well, 14 hours), which isn't leaving much time, or even any time, for Tokyo Mirage Sessions (I've done the first chapter) or Xenoblade Chronicles X.
I sank 50 hours into X last December, and then another 70 hours in the first few months of this year. I agree with your comments on the main narrative and the seriously underwhelming ending. For all the ambition, it's also quite clearly a mid-tier game in terms of budget, it's not had the kind of resources thrown at it that Breath of the Wild is receiving, for example. When it works though, it's unlike any single player RPG I've played. The depth of mechanics and systems becomes intoxicating, the world is stunning, and that combination of mechanical and systematic depth, aesthetic and world design, makes it one of the strongest role playing games I've played in one very key sense: your role within the game, one explorer among many on an alien world, comes across incredibly strongly thanks to the unity of systems and aesthetics. I honestly think X is held back by an attempt to have a single core narrative thread at the heart of it. The scale of the world and game would have been better served by embracing stronger secondary narratives, I think, rather than pursuing a traditional main quest.
I really hope I find the time to get back to it and continue with the quests I'm yet to do, because when it clicks, it's absolutely superb.
