I'd like to repeat a suggestion because I just feel it could really make the game so much more interesting! When we get down to it, wars are more often than not fought over for resources!
I'd like to see a limited resource system implemented or as an option. Astroids for crystals and Minerals should have a limited reasonable quantity and a production curve.
-a Mine Life cycle, should have have something like a bell curve production cycle. This would cause the whole market for reasources to make sense.
-it would encourage more aggressive game play and risky tactics to be used in order to obtain more resources!
I always find the early game to be most exciting but the late game to be too routine, I think limiting the resources would help solve that and make certain technologies more relavent. like creating trade alliances, or completing missions to gain needed resources.