I've always enjoyed reading game speculations, so what do you think crysis 3's story will be like?
Considering I haven't played the original crysis yet (but I do know what happens), here's what I think will happen.

Considering at the end of Crysis 2, Karl Rasch refers to the nanosuit 2.0 as "Jacob Hargreave's nanoshell", which leaves me to believe Rasch has his own version of the nanosuit. Before this when Alcatraz is knocked unconsciousness and finds Prophet in his subconscious, Prophet tells him we have to go back and finish the fight. Which leads me to believe two things. 1) We're going to finish the ceph once and for all. (Which to be honest, this should be obvious. 2) Considering Prophet is physically dead, I believe we'll see a Master Chief/Cortana type relationship between Prophet and Alcatraz. (I don't really believe in the whole "Prophet took over Alcatraz's body" thing.)