@paulp I've never driven to SA so am not aware of the apparently lacking SC network there. It's pretty good over here in the banana shaped region of the east coast, where I do all my driving (south of MEL to north of BNE).
Regarding TACC, I strangely don't suffer the frequent phantom braking issues others are having (my car still has radar, perhaps that's why). I've had a few instances (anecdotally related to the time when Tesla thought they could do without radar) but those have abated since then. AS has been what I would call rock solid in > 100,000km of driving, with >90% of it done with AS engaged. That means, I never had a single issue on motorways, and on local roads, there's just one single intersection where it repeatedly does something stupid and tries to hop in the adjacent lane. And a couple of lane swaps on rural roads, which I consider forgiveable due to missing lane markings. I made 3 videos of this (and shared with Tesla) in this playlist (look for Epping Rd / Delhi Rd):
https://www.youtube.com/playlist?list=PLgZfZGjXblHVIVJMPa1mjO2rO68zjr0KM
I'd actually be interested to know if others have the same problem there.
I agree it would be useful to be able to override AS briefly without it completely disengaging. I believe the Merc system allows for that?