User blog comment:D. Cello/Assassinews 01/17 -- ACW New Admin, key Ubisoft figure leaves AC/@comment-4406357-20120119115419/@comment-1888015-20120121004341

I think they might not have bothered to develop the characters of Suleiman, Yusuf, Sofia and Piri Reis because they thought that it was Ezio's final chapter in the games. It's a real shame though, because Ezio's in a new setting and pretty much everything is foreign and new, so characterization should have been an ideal.