It's game mechanics. Plain and simple, and it works, in that it's meant to ensure that players can't just make huge high-pop worlds and harvest money.
They chose to make the econ system work that way, they should have thought about it a little better. No clairvoyance needed, just some basic common sense, and knowing how the game really works. Now, if you go the "doesn't have to make sense" way, then 100B pop worlds aren't really an issue - a realism issue I mean. Just adjust taxes to those numbers.
But contray to your earlier statement, excusing such illogical things as game mechanics is not just valid, it's absolutly essental to gameplay.
A couple of mechanics, sure. But a *whole* game?! Is there anything in the game that doesn't have this kind of excuse? It makes learning the game morer difficult, and you just have to read the forums to know this is an issue. And it forces you to memorize caps and thresholds and a bunch of stuff, that you shouldn't have to.
Each update fixes 1 thing and screwes up 6 other things.
This is unfortunate, yes. Each new feature also adds a few bugs or unwanted behavior. Lack of a dedicated beta team I guess.
It's a different game every time they make a new release. Some things good, some things bad, but always different. Very replayable just because of that
Not using a feature because it's broken until it's fixed, that's a strange concept of replayability.
is the GalCiv2 gaming experienced going to be improved by implementing more realistic modeling of socio-economic factors, or is it just unnessessary?
Understanding the basics of the game might improve yes. Not really realistic, but logical. Casual play also improves, if you don't have to memorize caps. Reduces forum traffic too, with questions about stuff that apparently doesn't make sense. And yes, a game is a game, but that doesn't preclude it making sense. Heck, even card games have a sense to its mechanics.
Do we want tougher more challenging AI or is Old McDonalds farm good enough?
One thing doesn't exclude the other. But if they don't fix things, and improve the base mechanics, and instead add more stuff that will inevitably create more issues, they will compound and evenually become unsustainable.