well, considering that Kei has been free'd of the gantz room (though he has his memory back apparently, which btw has never happened before), we dont know for sure if hes going to be on the revival list - that would be like asking gantz to revive any single person who has been killed on earth (though this is a very unlikely scenerio - Kurono is and always has been the/a main character).
as for the vampires in the gantz room, who says they arent going to kill gantz? infact, im not even sure why nobody has tried killing him, it makes a lot of sense to me, i mean i dont think all the gantzers would be destroyed if he dies, unless they are all connected to him through some sort of life force (remember, they ARE copies made by gantz himself... as far as we're concerned that is).
btw, this is BS! i cant belive gantz is going on hold!!! very dissapointed... are there any gantz fanfic's around the place? it would be good to follow some sort of gantz plot while we have to wait - also, can anyone post up some links of mangas that have been mentioned in this thread (that is, if they cant be found on stoptazmo.com)?