User blog comment:D. Cello/Assassinews 01/17 -- ACW New Admin, key Ubisoft figure leaves AC/@comment-4115686-20120131163037/@comment-1888015-20120131173158

Really, there was no need for the button change really. Brotherhood had one empty slot on the wheel which could have been taken by them, and an small inner circle could have been implemented when the bomb option was chosen, allowing the player to select the bomb type with the right stick. Also, making the secondary weapon chooseable took away the functionality of the double kill streaks.