I've noticed something interesting. A friend of mine from my squadron and I are developing very similar systems. He's further ahead in the process than I am because I've been focusing on another system.
We both started with an industrial outpost. I paused my development to concentrate on the other system, while he proceeded to build two industrial settlements and two orbital installations, one agricultural and one mining.
Looking at the net statistics, we both have a security rating of 0. He has a slightly higher population, and his other statistics are, of course, higher than mine.
Both systems are, naturally, in low-security areas. However, the sliders are significantly different. Mine appears "normal," while his security slider has a much smaller "none" state area compared to mine.
This leads me to believe that for the system to evolve correctly, all statistics need to be balanced. He has a much higher probability of entering civil liberty, but also civil unrest or lockdown, making his system much more unstable.
This could depend on the population or perhaps the development level. It's possible that the development level gives us an indication of how high the statistics should be (within a certain range) for a stable situation. These are just hypotheses, but I think they need to be explored, and we need to pay close attention. Adjusting the sliders is a comparison we can make immediately without much trouble.
Another significant difference I've noticed between our two industrial systems is the goods produced. Despite him having a higher population and a more developed system, I produce significantly more goods with a single outpost. This is another strange thing, which I believe is either the result of excessive specialization in his system (he added two more Odyssey industrial settlements on the ground) or a healthier and more robust import economy in my system.
Another thing regarding changing starport economies was noticed by another member of our squadron. He built a Coriolis station orbiting a non-landable planet, but with three orbital slots. This Coriolis naturally has a colony-type economy. Before Thursday, I had him build a mining installation to try to change its economy. However, the Coriolis's economy didn't change at all. We've seen reports from others that even if the Coriolis is orbiting a star (and thus has no planets below), it's possible to change its economy with installations (I recall a report where a Coriolis became high-tech). This is also unclear how it works, and we need to understand it better. Perhaps one installation isn't enough to change a Coriolis's economy? Being a T2, is FDev implying that two installations are needed to have an effect?