The mix race mod

Ok i think this idea would be tons of fun, and maybe something that could get me some experience modding. But i'll need alot of help.

I would like to make, or have someone make a mod that adds a race that is a mix of all 3 main races. But the trick will be getting a kinda balance going so it would still be fun. Here are a few ideas. The Adecri would be made of rogue groups that split off from their factions, stealing tech as they left. They signed a treaty wanting peace and are funded by those who dislike the three sided war. But now the Adecri must join the fight in hope of defending their belief that peace can exist, i am willing to change their story if someone gots a better idea.

My first idea was to give them the cheapest types of ships from each race. the idea here is that they are more limited in resources so cheaper ships, cost wise is all they can afford. the ships might need to be tweaked. their structures should be a bit more expenive maybe. i think they should only have 2 or 3 cap ships, none of which can colonise.

So i want to hear ideas please, anything from tech trees to what ships they use. for this to work it has to be SINS community built, ill need people with good ideas.