I believe they could have continued the Cole Trilogy because in the end of infamous 2 good ending Cole's boat back home (after his death) it was shocked by lightning. now my thought is that the sudden shock of the lightning could have brought him back to life, BUT it woud have killed Zeke (if you remember Zeke died in the end of the EVIL ending and Cole got The Beast's powers) now that Zeke is dead Cole goes insanely EVIL and blaming himself
AND the lightning strike could...
it could be a prequel to infamous 1, Cole's father could have been working on a Ray Sphere prototype that went horribly wrong OR a Government "ACCIDENT" (Meaning big underground Government cover up or a perfect test run for BIOLOGICAL WEAPONS OF MASS DESTRUCTION OR BWMD for short) And another theory is that Cole is dead and his father had TWO SONS OR Moya (From Infamous 1) cloned Cole in a Government Lab.
Just a Thought. ^_^