The Alliance mod comes now to Sins of a Solar Empire games with all the space units which you can find in mod from the Star Wars Empire at War Force of Corruption.
The next 1.85 ver will come with some improves as the Envoy. The previous version used the Red Eye Heavy Cruiser for it. Now it will use a shuttle, perhaps you need escort it but I find it a lot better. It will be deployed after the research in the Imperial Civil Research Station with a deploy ability. You will be able to build the Red Eye Heavy Cruiser in the Frigates shipyard.
Other factions will use similar things.
About other things, lately I am working at a new mod for SOASE Rebellion which I will not show you before I have at least two races completed. But I can tell you how it is not a Star Wars mod and it is from another universe where never a mod at this game was finished.;)
oh maybe its bab 5 ?
No.
It is a mystery.