In 2.1 you just mindlessly clicked the upgrade button, now you have to think about what you are doing and make real decisions. Instead of mind numbing micro we got meaningful micro.
The problem described with starbases still persists, and there's nothing meaningful about having to perform starbase upgrades in separate segments.
It should be possible to queue up a full complement of upgrades, modules and buildings, so that I can upgrade a starbase to its desired level in one pass.
Planets would benefit from same principle - I find that a lot of my planets share a basic set of buildings: unity, pop growth, stronghold.
Why can't I just queue up these buildings, so that they're constructed when the planet has sufficient pops?
Almost no thought, but a fair amount of time, is required to open every "completed construction" notification, note that both the working pop is now less than maximal and further growth is possible, and close it.
Almost no thought, but a fair amount of time, is required to scan your planet list for unemployment, open the planet, pick an appropriate district/open building slot, and plunk down the umpteenth copy of a basic building.
These are not strategic decisions. They are barely tactical decisions. They are mostly rote and maintenance decisions and they persist for a very long time for every planet you colonize.
What's worse is that this problem only increases as the game progresses and the outliner grows in size.
There's nothing fun or meaningful about clicking through 10 planets to check for unused strategic deposits, so why would it be fun at 50 planets?
Stellaris 2.2 suffers *badly* from what I call the "upscaled strategy" problem. Developers wanted to let players manage a vast empire, and have done so by letting players own dozens (if not hundreds of planets).
However, the player has been provided only with a minimum of tools to efficiently manage this vast empire, and so a lot of playtime boils down to sifting through what can only be called useless information.
Combined with the pathetic AI and the absolutely horrendous UI, Stellaris 2.2 become thoroughly unenjoyable before ingame year 2300.