Thanks for the positive feedback. Great to hear you enjoyed the game.
Akasha cargo unit is buggy in 2.20, it "pulls" from the shields underverse addon number accidentally to determine how many items you get at night
Overcharging has effects for Cargo, Mining, Shield, Engine, Cannon, Launcher and Argus but not for Hyperdrive.
As to expansion there will be 2.30 with away mission rpg combat and also some vee content.
Probably one more version after that to wrap things up but a bit depending on polls I plan on patreon / subscribe star.
TLDR: For at least half a year there is new content!