Thanks for playing and for the feedback! I understand where you're coming from on a lot of these, and I do want to make the base gameplay loop more interesting than "draw resource, sell resource". As you noticed, stability was one attempt and I think I have some more possible answers to that, but appreciate that it is still an issue. You're not the first person to basically say the game plays itself and that's the last thing I want.
I do like your suggestion on stability. It is supposed to be the planet becoming unstable and ripping apart, so having bigger penalties for it than just "you have to sell this item right now" would make sense.