I'm pretty far into this (Sequence 9) and having mixed feelings. The setting is fine, the story sucks, Connor is a terrible protagonist (game would be 10x better with Haytham as the main character), the game is absolutely horrible at explaining anything, it's glitchy as fuck and like 2/3 of the missions are godawful. Despite all this, it's still a pretty fun game and the mechanics remain solid and entertaining. Tomohawking dudes in the face never stops being awesome, the easy auto-platforming still looks pretty cool most of the time and my OCD side still loves collecting everything (aka it's more AC). It's probably one of my least favorite games in the series (Bro>AC2>AC3=Rev>AC1) but I'm having a decent time.
Oh, and give me an entire game of naval missions, those are awesome.