Can't wait.
The surface improvements look great. Obviously we don't know what'll be included in the release (earth-likes? Unlikely. Volcanic planets? Ammonia planets, possibly? Water worlds? Probably not...)
I can't wait for the atmospheric backgrounds, IMO it's a subtle but big improvement on combat when it'll be easier to see ships against a bright background, instead of relying heavily on HUD markers.
I see the combat elements as a bonus rather than a key feature. I'd have been happy with exploration, scouting, scavenging, repair etc. I'm happy to see the jet-packs, they're pretty crucial in getting out of awkward corners, particularly on PG terrain.
Can't wait to see if they add any audio/visual/flight-model differences for the atmospheric flight. Heating up on re-entry? Sonic booms? Turbulence? Weather effects?
For me the only downside to this are the keybinds. More keybinds. Whelp.