I made a race with an original income and ship designs, but there was about zero feedback.
The income revolved around using all your land for a slightly positive income (Similar to commerce- but much less), and a research tree that would help the CG problem more effectively. Essentially earning a base +10 per land used, plus the goods you would make from this land being used (much less than Miners).
The ships I proposed were a mix of offensive and defensive with a mixed chemical kind of weapon for the most part. The upkeep and mineral costs based somewhere between [marauder/collective] and [miner/terran/viral] to balance the small[er] amount of typical income they would be making.
Of course, Stephen would probably have to have a hand in there, but we all know that`s never going to happen...