[shinigami]

Two more, Tinkers and Techno-Leeches, both of which would require a ton of work on a modder.

Tinkers; A race able to combine different techs into totally new components, facilities, mounts, ect. Extreme example: Computers and Combat Support to get Master Computers that have a bonus to a ships offense.

Techno-Leeches; A race that does very little research on it's own. Instead it steals technology from other races, including racial techs. You'd have to change all the racial techs so that they could be stolen (and once you have done that never start a high-tech game or everyone would have all the techs.)