A Stargate Mod would be freakin' awesome! But how would spacial travel be possible in 7dtd? You'd have to be able to jump between maps essentially. And maps would need to be different from each other. It could actually work pretty well if instead of having multiple biomes, each map just had 1. So you have desert planets, snow planets, etc. And one of the forest types could be reworked in terms of looks to be a rainforest, etc.
Can't even start to imagine how much work it would be to put something like this together. But sure would be awesome.
Now for 7 Days To Die Farscape? xD