First of all, sorry for my bad english !
I'm one of the lucky person that found ACR earlier than the release date !
Really enjoying the game, but I found that there's no more "secondary quests" like we can have in brotherhood ! Where are all the secondary assassination contracts, thiefs challenges and so on...
Constantinople is so huge, but there's nothing much to do there I'm only on sequence 4, maybe there's more to come...I hope so !