I realy love this mod, its great fun, and it great to see you guys are still working away trying to make it better.
I like to suggest, more planet types, look at sins plus and malestrom for some inspisration on new planet types.
Also a new ship ability, the Borg assimilator sphere can have the ability to assimilate worlds on the spot, by creating a temporal vortex, which make the planet there's and destroy all orbiting enemy buildings instantly. However this would have to be really costly antimatter wise, and have a massive cool down time, plus you'd need some way to block it, like the jump inhibiter, but for preventing time travleing evil cyborgs.
Also, the norway class cruiser, please can you just make that a normal combat ship rather than a starbase constructor, maybe replace the constitution class with the maqui's raider as a scout, and use it for the constructor instead.