[Andrés]

1-Advanced Shipyards should simply lower planet value, IIRC many industrialized worlds are described to have been depeleted long ago of any valuable ores (sometimes this includes their moons and nearby planets)

2-Choosing Imperial technology traits but another happiness type such as peaceful of bloodthirsty should be considered cheating.
Perhaps they should start with the lowest infantry troops.
It should also be balanced with their colonizing advantages.

3-Trade federation techs are mostly incomplete, I was concentrating to finish first Imperials and Rebels.