Mot sure if I want to wait for Crusade to redo this MOD or to release it in Nexus... but here's a WIP/preview of something I've been working on for the past year:
Sci-fi at war.......
Story line:
The war is going badly for the Dregin. Terran Alliance's first fleet liberated Earth and is now launching a 'crusade' against the Dregin Core worlds. Facing imminent defeats, the Dregin activated their precursor doomsday super weapon, a device called Space/Time Oscillation Bomb. Instead of MAD (mutually assured destruction), the detonation of the Oscillation bomb caused a massive temporal-dimensional quake, fusing multiple parallel universe(s) together.... Now multiple parallel Earth civilizations and multiple new alien species awaits your discovery.... That is if you don't get destroy first by these new races.....
1. A... hopefully.... transparent story line to tide in GCIII and multiple new Civilizations (and muliple planet Earths) in this mod. The idea of a Space/Time Oscillation Bomb / fusing parallel universe is heavily borrowed from an old Japanese Anime: Super Dimension Orguss. The idea of mixing different anime/sci-fi shows together for a game came from the Japanese Game series Super Robot Wars.
2. 37 new races (unique ships and custom races) although I will most likely omit any Star Trek related races when i release this. I suggest using Horemvore/Airmaster's Star Trek Mod instead. Airmaster is a good friend and I highly recommend his mod (see below for compatibility)
3. Compatible with GRM and Star Trek Mod (tested up to version 2.0)... well.. compatible as in I've been playing my races against GRM and Star Trek Mod for some time now 
Your mileage may vary
4. Seeking permission to incorporate a few custom ship designs into this mod. Emails are being sent to creators of those ships (say... who created the System Commonwealth ships... hint hint )
5. No custom weapons and SFX... or rather, I should say no custom weapons and SFXs are included in the release MOD. I did create a few 'super weapons' for specific ships (like the Macross Cannon for the Macross SDF1), but I think they are overpowered and I will not include them with the release
6. Assuming I got all the permissions for #4, the MOD is ready to release... HOWEVER given the release timeline for the offiical Crusade DRM and Dev's promise to include creation of custom Civilizations and ship sets, I will most likely wait until the release of Crusade before release this to public. Some of my ship sets are up on steam already for download if you care for an advanced look.
Races:
0. Federation of United Space. My own race. Ship sets include ships from different Civilizations. This race is my MOD's primary universe Human fraction. the idea behind this race is that they manage to explore this new fractured universe and unit different races together
Races from anime:
1. Mobile Suit Gundam (UC 0079 ~ 012x): Earth Federation
-Mobile Suit Gundam
-Mobile Suit Z Gundam
-Mobile Suit ZZ Gundam
-Mobile Suit Gundam Char's Counter Attack
-Mobile Suit Gundam F91
-Mobile Suit Victory Gundam
2. Super Dimension Fortress Macross: UN Spacy
-Super Dimension Fortress Macross
-Super Dimension Fortress Macross Plus
-Super Dimension Fortress Macross 7
3.Super Dimension Fortress Macross: New UN Spacy
-Super Dimension Fortress Macross Frontier
-Super Dimonsion Fortress Macross Delta
4. Super Dimension Fortress Macross: Battle Galaxy Fleet (ship set from different Macross races)
4. Super DImension Fortress Macross: Windermere Kindgom
5. Super Dimension Fortress Macross: Vijra Race
6. Super Dimension Fortress Macross: Zantradi (ships doesn't look correct, may pull from MOD)
7. Super Dimension Fortress Macross: Meltradi
8. Genesis Climber Mospeadas
9. Legend of Galactic Heroes: Free Planets Alliance
10. Legend of Galacitc Heroes: Galactic Empire
Game(s):
11. StarCraft I/II: Terran Dominion
12. StarCraft II: Raynor''s Raiders (same shipset as Terran Dominions)
13. StarCraft II: Protoss
Sci-fi:
14. Babylon 5: Earth Alliance
15. Babylon 5: Narn Regime
16. Babylon 5: Centauri Republic
17. Babylon 5: Mimbari Federation
18. Babylon 5: Vorlon
19. Babylon 5: Intersellar Alliance
20. Stargate SG1/Atlantis: USAF
21. Stagate SG1: Anubis
22. Stargate SG1/Atlantis: Ancients/Lantians
23. Stargate Atlantis: Wraith
24. Stargate Atlantis: Asuran (same shipset as Lantians)
edit: Stargate Atlantis: Ori
25. Andromeda: System Commonwealth
26. BSG: Colonial Fleet
27. BSG: Cylon Fleet
28. Aliens: Colonial Marines
29. Earth Defense Force (my own personal race with my own custom ships)
<Star Trek races will most likely not be included, please use Horemvore and Airmaster's Star Trek Mod>
30. Star Trek: United Federation of Planets
31. Star Trek: Klingon Empire
32. Star Trek: Dominion
33. Star Trek: Ferengi
34. Star Trek: Species 8472
35. Star Trek: Romulan Empire
36. Star Trek: Borg
Incompelte race/shipset:
Babylon5: Shadows
StarCraft II: Zerg
Star Conrol: Alliance of Free Stars
and a few more.......
A bug in GCIII is preventing me from creating custom starbases
Refer to my screenshot page for ship design screenshots
http://steamcommunity.com/profiles/76561198094878041/screenshots/
Some of the shipsets:
http://steamcommunity.com/profiles/76561198094878041/myworkshopfiles/?section=collections