I only recently bought Assassin's Creed: Brotherhood. I finished it last night, personally I think the ending is brilliant, though I had to think about it for a while to fully understand it.
Now that I have finished Brotherhood, I am looking forward to the the relase of Assassin's Creed: Revelations. From what I have read I understand that it will not be the last in the series, I hope not anyway.
One thing that I don't like about the continuation of Ezio's life is that we have to watch him as he gets older and older, it's deppressing that a character that players have come to love is basically going to be on his death bed when eventually Ubisoft decide to move onto a new Ancestor of Desmond's.
If was on the production team for Assassin's Creed, I would suggest that it were possible to remove all armour, since Ezio does look better when he is only wearing his robes (that is in my opinion) and I feel that I don't require the armour.
I am wondering about Ezio's new look in Revelations, I don't think that the fur looks good, though that may just be an early conception and second I just want to say that I hope the Assassin's White Dye is available because I don't like the current colour scheme.
But overall I think Brotherhood was an excellent game and I am really looking forward to Assassin's Creed: Revelations.