I dont think that the walkie talkie on the ladder by the water tank is Dr.Maxis he Kinda sounds like Nickoli or a Russian... and Who would know who the hanging guy is because ppl say that the "Edward" on the radios helping Maxis carry out the experiments is Edward Richtofen but "Edward" locks maxis up and his daughter with the hell hounds and you hear somebody hanging their self so it cant be edward richtofen since he is alive so maybe there are 2 edwards or maybe ricthofens name isn't edward i dunno i heard it on here somewhere.

Seems kind of like an open shut case to me, they found rictofen, they found what he did and what happened to the facility, and they either got away or died. I don't really see what more story they could add to this. Yes there could be a new map but treyarch is trying to add story, and they kinda wrote themselfs into a corner here.

This sounds ridiculous even to me but...
with people wondering how Edward might be richtofen, maybe cloning, out of the blue I know, but they do have teleporters...
Just a thought