Ok I need to get this off my chest, take the reactionary punches that follows and then I'm done here.
HUGE AC fan here, easily my favorite Nintendo DS and Nintendo 3DS titles and I have limited experience with the home-console games. What drew me in was just the vibe. It's as simple as that, but what kept me was the charming design, of having random seeds which breeds "unique per player" content, and makes it really satisfying once you burnt out after 3 months on your village, constructions and management to say "Ok I'm gonna do-over it all, give me a new seed and a clean town!" and the joy of being in those 3-month sprints where I actually played it was all about the lived-in feeling. It would update my calendar spontaneously (even if it's all pre-planned systematically) and I would "log-in" every day and be surprised there was almost always something new happening. That hasn't changed but the rest of the experience has... and I can already tell it won't improve what I think makes the games work.
What makes it all work is the subtle and "hidden" nature of the way the games are systematized. It's the random terrain and town seeds, pattern generation, face generation, who comes and goes.
They literally took everything that used to be a reactive and organic element of the game engine and said "HERE YOU GO, PLAYER! YOU CAN CHEAT NOW." and we just get to decide literally every thing right down to almost stats that determine what is in your world. This is a cop out. Almost none of these things are actually new features to the game or its engine, they just give you the keys to them. I was already a bit leery about the Mayor thing in NL but it was a nice balance between the generated and the player-driven content. This is like 100% more player-driven and it takes out too much of what made AC stand out from any other "SIM" franchise.
Very, very disappointed right now. It's like "Animal Crossing: Materialist Edition".
Really debating whether I am getting it day 1 now. I hope they mitigate this lameness via good post-launch support so there's still a sense of an immersive and ever-growing world that changes with the clock.