1. You could be right. My one main issue with that theory though is specifically Verruckt. Verruckt happens before Die Rise since we know Dempsey gets captured there and is experimented on by Richtofen at Der Riese. So that seems like one specific outbreak that is completely contained, just based on the radios. And Peter's messages, and possible torture at Verruckt and body at Shino, also make it seem like all the WaW maps were each a contained outbreak. But one could argue that thats not Peters arm at Verruckt nor body at Shino.
2. That is an interesting idea. That the Moon is like a constant throughout the multiple universes. If you make the argument that the rockets from the Moon pas across multiple universes though, couldn't the same thing be said about Dempsey and the others teleporting back and forth?