In star systems the sun only lasts so long... and while i realise that suns last much longer then the time of the game, every once and a while i sun should go, completly hindering a civilization or blowing up a useless star system.
On Planets famin can ocur but what about twisters and other natural disasters? Poorer planets should be prone to such things. Even a serous flaw in your factory has caused your planet to be reaseve a ? military and socail production while the factory is rebuilt. By making the game have realalistic setbacks players will be forced to juggle and enjoy GC2 more.