The last version of the game that has been truly unified in design, with everything working more-or-less as intended was 1.9. I'm not saying the 1.9
mechanics were better, but taken as a whole, the the game simply achieved a better symbiosis between all its moving parts in 1.9 than it ever has since.
When 2.0 came out, there were a lot of problems. To the point that people here, on reddit, and on the steam forums told me to come back in six months when they'd be fixed. It's now been a year, and it feels like the developers have no actual vision for what they want Stellaris to be.
Any given system that was introduced post-1.9 could work in a vacuum. New war and white peace, the market, piracy, static defenses, new planetary management, and new sectors. All of them could be refined to be solid... on their own. The problem is
not the systems and mechanics themselves -- the problem is that PDX has seemingly given zero thought as to how these systems interact with each other and how one problem can have a butterfly effect that breaks other parts of the game. This is no more obvious than it is when we look at how the AI has been on a steady descent ever since 2.0 launched. Each major patch has damaged the AI worse, because they simply cannot juggle all of these systems at once in such a way that lets them succeed.
But you see it other places, too. This planet overhaul has lead to odd changes in certain playstyles (you can see all the posts here about robot empires, fanatic purifiers, etc.). It's made ascendency perks less useful or even
out-and-out useless and harmful.
This constant cycle of refining a system for years only to completely knock it down and start over has damaged the game in a fundamental way that I don't think it will ever truly recover from. It seems like these builds aren't even tested, sometimes, because some of these oversights are so obvious that the community catches them almost immediately.
Making a good system isn't good enough if it sucks when it's combined with the rest of the game. There are tons of interesting mechanics that you could add, but they have to go well with everything else. The new planetary system is excellent example of this. In a game about managing planets and
nothing else it would be pretty good. But Stellaris isn't that game. When you add it to Stellaris, you just get an insane amount of micro that takes your attention away from so many other parts of the game. Stellaris has become a Frankenstein game of disparate mechanics, instead of a harmony of systems that all contribute to one, unified whole.
I also don't think it's a coincidence that this has been the worst year for Stellaris when it comes to reviews on Steam. Every DLC has stayed at "mixed", and the main game has had its main review score fall ever since 2.0 came out, with big batches of bad reviews coming in with each subsequent update. At what point do you stop blaming the audience, and start acknowledging that something is going wrong with the direction of the game? I don't think it's unfair to call 2.2 and 2.2.3 "unplayable" with how badly performance and AI have tanked.
Every update, I find myself inevitably going back to 1.9. The game simply worked better then than it has since. I don't even buy DLC anymore because I know that I won't be able to play it after rolling back.
I loved Stellaris, and I want nothing more than for it to get better and improve again. But if 2019 is the same as 2018, I'm just not holding my breath.