User blog comment:D. Cello/Assassinews 01/17 -- ACW New Admin, key Ubisoft figure leaves AC/@comment-4530924-20120203231834/@comment-1888015-20120203232240

Because it is disappointing if that was the only good part in the game, the end. Also, even if Brotherhood expanded the series as much as Revelations did, at least Brotherhood kept you occupied. Revelations was just one long outstretched main story. There was barely any side missions to support it.