cage will never die! he was only killed off based on Daniel Pesina 's breach of midway contract,(and the MK2 comic?) for the sake of missing no characters out of trilogy they filmed chris alexander in pesina's place...
midway themselves must dig the character by putting him in MK4 (even shang tsung wasn't in that)then mk5 too, i think to give mk deception a change of characters they left him out,as MK DA and MK deception have roughly the same fighting engine (as Nightwolf has Tae kwon do where sonya had it in the previous game etc...) But Cage is back in shaolin monks! Perhaps as Cage's story is closely following liu kang's around MK2. You know i heard cage was killed by Kintaro! was that what took place in John Tobias' MK2 comic?
Anyway i love cage and i'm sure he'll be in MK7 well here's hoping!