Hey, great mod so far, it really adds something to the game!
I know that you mention that this mod is not multiplayer tested, but a friend and I tried it anyway. So far it all seems to work quite fine (about 30 hours in our playtrough now) with 1 exception:
When you start the game you get your starting base and a bunch of resources dropped. In SP or with the host joining it is obvious that these should spawn. However each time a new player joins, the same buildings are spawned in again, on the same place. This causes for multiple structures to occupy the same spot (resulting in visual glitches and selection issues).