upd: maybe also Sirens. Ralleia the Siren - what is the Siren? Name of race?)
Possible version:
Ikarians - Dictatorship, +50% Growth, +1 Research, Artifacts World, Large Home World. (Simple researching race...)
Tulosians - Feudal, +2 Food, Ground Combat +20, Ship Defense +25. (No Special Abilities!!!)
Sirens - Feudal, +0.5 BC, Spying +10, Telepathic. (Matriarchal society like Elerians)
2. How about the researching of space monster weapons like Orion/Antaran techs?
3. Maybe designing and refitting of star bases, battlestations and star fortresses?
P.S. Sorry for bad English. Not my native.
![Sad :(](./images/smilies/icon_sad.gif)