So earlier this year, Battlegoat released a new version of the game:
https://store.steampowered.com/app/2338470/Galactic_Ruler_Enlightenment/Apparently I grabbed it at some point, though I don't remember doing so.
While I've only played around with it a little so far, I get the sense the game might be both deeper and more complex than it first appears to be. I admit to being intrigued.
Unfortunately, the game is also held back by being less than intuitive to play, including a UI/UX that isn't always the most helpful. I suspect those familiar with the developer's Supreme Ruler series would have less difficulty, but newcomers would almost certainly struggle.
It's frustrating: I can definitely see (at least some of) the game's potential, but the steep learning curve is definitely going to keep a lot of folks from wanting to try it. Perhaps Battlegoat is fine with that -- I can understand not wanting to "dumb down" their games -- but I feel like there's probably a middle ground somewhere, where better controls and/or UI could make GR notably easier to get into.