User blog comment:Master Sima Yi/Assassinews 05-08-'14 – Assassin's Creed: Rogue announced/@comment-173.189.47.87-20141118042127/@comment-5019018-20141118222307

I think Unity tried to fix what wasn't broken. Pushing the history to the background (from what I've heard, it doesn't blend it with the Assassin conflict like most of the others did), completely revamping the gameplay, and putting so much stock in "social" stuff weren't things I was hoping for when I first heard of Unity. The gameplay in AC4 was fine (to me at least), and the engine still felt reasonably fresh. I didn't see the need to change it all so soon.