Not much more to do for Tradum now. Got trading in, system jumping requires fuel now, the System intro screen now shows an image for the planet, and I put a title screen in.
Just the Ship upgrade screen, System Details screen and "Galactic Events" before I can call the game 'done'. Any time after that I can maybe add in actual missions.
It can be played here: https://geeitsomelaldy.itch.io/tradum?secret=2p9Vz...