I think you're making it too complex,

I agree it's like what you say and wasn't trying to suggest it was different, though I can understand why it might come accross like it, maybe equilibrium was the wrong term to use? What I was saying was the realm of the acceptable limits on planetary generation may have been based on what could exist in equilibrium, or planets that are stable. Some of the Horizons planets that push the boundaries of possibility may not qualify for that definition, they could be thought to exist as a temporary transitional stage after an event or something, but my feeling/guess is that Stellar Forge wasn't designed with that kind of added dynamic complexity in mind - which I think is what you took from my post? So, if a planet looks like it couldn't exist in a stable state of equilibrium, like Earth etc.. then it may have been viewed internally as an undesired result to be fixed with the updated tech. Hence also the references others have made to tensile strength etc..