That is a very American way of looking at it. Of course almost every airport in the US has “manual”, “expect vectors after XXXX” departure / arrival procedures. Elsewhere like in Europe or Asia, you are expected to follow the SID or STAR pattern.
Agree on all the improvement points. Except:
2 Controlling taxiing aircraft: they probably need to program the AI better, especially the ground vehicles
3 About nagging about the aircraft to clear runway: it should be AI programming, not ATC. The old one will directly cancel IFR if you don’t comply with their altitude assignment and ignore their nagging for prolonged time.
6 In other parts of the world, this kind of greetings is quite common (usually just “thank you” from the pilot). But in MSFS, that “good day” sounds pretty sarcastic, delaying, and procedural, which makes it rather annoying.