I've been playing Starmourn for a week or so and I must say I love discovering what the game offers. I found the market order and refinery commands a little confusing to begin with. It's obvious once you figure it out.
One thing I don't like is that you have to pick the % when you take an order (i.e sell your refined gas/asteroid). It gets confusing, I don't know if it's in hard units or a percentage because the syntax just accepts numbers. Can we either add a shipsim prompt which converts the percentage into hard units? It would be less confusing if it was listed in units.
The other thing is that a warning that you can't cancel orders once you take them. For newer players (where 50 marks is a big deal) a warning the game should refuse to accept orders unless you enough units already in your cargo hold to complete the order will be very helpful.
When you're taking an order it should show a prompt of how many scooped units of gas you'll need to complete the market order, for newer players.
I'm enjoying the game immensely