Even the Playstation OS is better than this. It asks you whether to update before shutdown or the next time it starts up. ‘You’re 33% there’ is gaslighting, especially when you’re just shutting down the machine to go to bed.
I made a tool that migrates from one DB format to another. Then another format was introduced. Of course I reused the assets from the tool to expand the tool to migrate to the new DB format. But then I know more of what can go wrong with the tool, so even then testing took longer, but the tool ran cleaner.
Even Morrowind was a simplified version of Daggerfall, even though it was groundbreaking when it was released. They decided that the direction to take was to simplify the mechanics progressively, to make the series more appealing to more people, as opposed to adding interesting complications back as their tech develops. They succeeded in their mantra of “keep it simple, stupid”. I don’t have any hope that the next game will be more interesting. It will look prettier, of course.