Extremely cool idea. I like how you tied together the two big systems; piloting performance directly impacts how much you can buy at a given planet. The piloting for me, while difficult, was interesting, and I could see the paths to improvement. Unfortunately, as someone said above, the metagame of the heat shield is quite simple - just make a very long, single-wide ship. Perhaps it would be more interesting if this was also tied to piloting (i.e. you need to control facing as you enter the planet).
The biggest issue for me was that, when there are several planets nearby, I couldn't tell which one I was going to land at. Furthermore, when I hit land, it chose the wrong planet and I had no option to back out. Other small issues I noticed, in no particular order:
- seeing what's in cargo when selling - more info about planet rotation - indication that cargo needs to be clicked after buy - indication that you need to click close to the ship to change burn direction
But, hey, every LD game needs polish. Overall this is a very cool game with some interesting systems, and I'm impressed at just how many of those systems you managed to implement!