Falci: I just finished AC Brotherhood and felt a bit tired of the game by the end. Too much stuff to do, most of it not so interesting or great. Though I understand that's more a Ubisoft open world game kind of problem than a problem with the concept/game style.
I get it. Put it in your wishlist for another time then, it's much more focused than AC, as in, it's actually about assassinating enemies, instead of faffing about. You should enjoy it, just not right after playing an AC game.
From the rest of your list I really don't have any recommendations. I either haven't played the games or did and they failed to impress me. In those circunstances, I guess go back to the Witcher games? Those are pretty great.