After spending some time in the B'Tran Cluster, I have the strong feeling aout 90% of all missions are either ground combat missions or "aid the planet" (which could be completely removed from the game witjhout anyone missing them...), and like 10% are actual space missions - checking wreckage, clearing an area, defenfing a base, scanning anomalies etc.
I don't know if the patch changed the odds on all unexplored clusters, or if it's just that bad in B'Tran... It is so bad that I usually skip "Approach the Planet" And "Approach the Base"* missions entirely just like "Aid the Planet". Sigh.
[*Hint: Look at the map in the beginning. If the base is on the far side of the asteroid field, it is almost guaranteed to be a ground mission, if it is in the middle, it is in most cases a space mission.]
I got a quest to investigate a Borg listening post. Turns out the Borg government abandoned it so that they wouldn't create a diplomatic incident with the Federation. I guess they really are different to the Borg we used to know.