Can you terraform planets, and if so, how in depth is it?
Would you just drop a "terraformer" or something, or would it be more immersive?
Do races require an acceptable atmosphere to live in, or can any race freely live on any planet?
These are two of a very short list of things that I am actually unable to answer at this time. I will be sure to respond to these just as soon as I am able to.
As for our aspirations: Both of those features have been discussed among the dev team and we would like to do both in depth, just as we would like to do actual directed planetary invasions and so forth.
Is it possible to create planets?
It is our goal to allow the player to create or destroy any interstellar/intergalactic phenomena, including stars/planets/black holes/etc. So yes, that is our intention. How that might be accomplished is still being discussed between Reaper, myself, and the rest of the devteam.
Are superweapons capable of destroying entire planets or armies at a time?
Yes.Of course, with enough size and weapons research...
any weapon can gain qualities normally regulated to 'superweapons'; the Plasma Beam featured here is outputting enough power to destroy every manmade structure on the surface of B-13 IV in a single pulse thanks to a generous amount of research in energy systems, beam weapons, and ship systems.