Each space port unloads +10% faster, up to +50%.
Some planets have special trade goods that add bonus money when the freighters arrive.
Advanced weapons tech trees can be gained from alien ruins.
You must create a colony(0 pop) when mining asteroids through the f9 screen when in SM mode. You must periodically pick these minerals up through the Task Force window.
Can anybody else think of any repeated issues that our new members have had? I am pretty sure that I have forgotten a lot of these. My memory is ... unreliable.