Giving credit where it is due, I do agree that the Tesla cruise control is great. I was driving it in Germany and Austria and it maintaining correct speed going down mountains and hills was just chefs-kiss perfect.
But - I think it is not correct to say that you don't need a speed limiter because of TACC or that it can replace a speed limiter. And I believe I got into a good rhythm with the Tesla (with TACC on, hold stick down when approaching a speed change sign, release when I pass it, no beeps of disable/re-enable- although this still causes overspeed alert even if car is slowing to match new speed).
I had the overspeed alert set very strict - which is why it was beeping at me - but without a speed limiter this is the only way to force myself to not go overspeed everytime I accelerate while looking at traffic rather than the speedometer.
Driving in 20kmh areas, TACC didn't switch on for me, and I hated having to re-engage TACC every time I slowed to enter a roundabout. I literally just want to concentrate on driving in these complex suburban situations, but I don't want to have my photo taken by radar, I just want the car to limit my speed, or have the speed available if I really need it suddenly (at the extreme end of the throttle range)
Have you used speed limiters in other vehicles? I know I have driven a Peugeot 2008 which could read speed signs then you could double press a button to set your limiter to that speed.
I want that, but without needing to press a button. I actually want to remap throttle response over the range of the throttle, and have a particular range of the throttle which is "sticky" at the speed limit... like a "gravity well" of throttle range that will maintain the speed limit. Does that make sense?