I was thinking of a survival like mode. Imagine, the game starts the same, but in some part of the alaxy an irrational life form start to conquer and destroy planets and stuff. I thought it could be a black gooey stuff.
Maybe lots of survival modes? Hyper spawn; Creeps destroy block pretty easy; Gooey thing; Space zombies invading... Etc.
A survival mode would be awesome. Maybe have a foreign race make a base on your planet and begins to build and send waves or troops at your home or base.
Or even a checklist to enable these things when creating a new character/world. Well it would probably be a separate mode/option so you wouldn't have to worry about it either way if you didn't want it.