ATC rework is underway, scheduled for Update #4.
That is listed in the “Top Wishes List”.
It says phraseology, but my understanding is, it will be more than just a terminology patch.
The weather bug showing incorrect weather is one thing, and Asobo is aware of that.
What they can’t reproduce is the weather not working correctly after a second and susbequent legs of a flight.
That is not consistent between users.
Myself and several other posters in here do not experience that particular issue and Asobo says they don’t either, but with help from posters here, they are starting to narrow it down.
You should read Abriael’s interview with Jorg Neumann, head of the sim.
A lot of the topics you mention here are covered in that.
Obviously, things aren’t going to get an instant fix, but reading that may give you a lot more ideas as to what is actually going on with this sim.