The final update is out now.
I didn’t think I’d ever get the 3 stars to unlock the campaign but I finally did it. I guess I didn’t play that many times, maybe 3-5 on Epic and now 2 on Steam. I don’t know if it was just luck with the research or if something finally just clicked. I was able to get happiness over 100 and got 4 stars.
My guess is both, plus some luck with planets compatible to your playstyle/research path showing up near each other.
Good to hear; hope you enjoy the campaign. It has some good twists on the standard theme, though note that some levels are much harder than others.
I’ve been playing a lot of this over the past month; including moving up from Reasonable to Tough.