I'm a huge fan of AC but I did find 3 disappointing - performance bugs (i'm SLI'd with two 670's) and graphical glitches too didn't help (snow was broken for SLI). I agree WHOLEHEARTEDLY that there wasn't enough assassination and that the game world felt a bit 'empty' in terms of interesting stuff to do. The naval missions stuff was great fun though
Also, connor - what a block of wood. He was so damn BORING wasn't he? Glad he's 'retired'. I wasn't a big fan of the setting either (i'm a brit but it wasn't the brits being bad that put me off it's just that area of history lacks much interest for me - probably diff. if you're a yank I guess). It lacked the mystique of the eras of the previous games. Perhaps it would of helped if they'd hung on to Jesper Kyd for the music too - I always found his compositions added so much to the atmosphere of the game and, although the new guy wasn't terrible by any means he didn't compare for me.
So more assassinations next time, a more interesting setting and hey, lets have some of those cool side dungeons to explore again please - the tomb raider-esque puzzly bits were a lovely break from the fights.