Does anyone know the sci-fic novel/cartoon "the Legend of Galactic Heroes", which is popular in Japan? Though no one seems playing SE4 in Japan, it includes every elements needed in making an interesting SE4 mod:
1.official galaxy map
2.complete shipsets,troops,fleets,technology system,planet facilities
3.artificial planet just like death star which locates in the only space corridor connecting the two countries. It will cost your entire empire fleets to occupy it.
4.long complete story with detailed fleet tactic descriptions
It has been made in games for several editions in Japan.
links to its website:
http://www42.tok2.com/home/kakip/
http://www5f.biglobe.ne.jp/%7Emercy/frame/index.html