Looks pretty good.  If I were to use it, I'd probably change the terrain table a little (there's a lot more empty space than terrained space; maybe make a 4+ roll to see if there is terrain, and then roll terrain if there is, replacing empty space on your table with black hole).  Skirmish and Supply Raid also look fun; Supply Raid in particular reminds me of Battlefleet Gothic's similar scenario.  I might vary the classification of 'light ship' for the purposes of Skirmish (some of the fleets I use only have engines 5+), and allow anything with a particular percentage of its hull space taken up by Cargo to be classified as a cargo ship (and be worth VP/RP varying by its cargo capacity), but other than that...  good stuff.

As someone currently playing with the Simplest Campaign Rules right now, (see Blacklancer99's thread), I have to agree with Nomad. The terrain chart should be shifted to create more empty space... although, if you prefer terrain, then it should be shifted only slightly.    But we have found terrain playing a huge role in the outcome, especially with some scenarios.

That's a good idea. The far out effects of those should probably be encountered less than empty space, asteroids or planets.

Really nice!  Like the scenarios, and excellent presentation too!  I've also been working on a terrain and scenario table - put this below.  Think the only way to find out if it works is to keep trying stuff out.

1    Planet (sz 2 or 3, 50% chance each), moon on 1-3 (d6), further moons on 1-2 and keep rolling until get a “no moon” result
2    3d6 asteroids
3    Micro planet and 3d6 asteroids
4    Clear
5    Clear
6    Other - Micro planet (1,2), d6 asteroids and Hull 8 independent habitat that fires on closest of either side -  (3,4), dust cloud (5), black hole (6)

Using this for a specific campaign, where there isn't a local nebula.  Like you, I like terrain.  The way I think of it, conflict happens near resources and assets, all the rest is hyperspace.