3) Get better at handling curves smoothly, which should lead to not prompting me to touch the wheel on every sweeping turn.
You should, of course, have your hands on the wheel at all times! If you did you will see how much steering input the AP system has - way too much in my view. The extra wear and tear on the steering components must be pretty high. Not good.
Steering and TACC is definitely too fussy about sticking to a direction/safety gap. Both systems should be able to smooth things out a lot more than they do now without compromising safety. In the case of the latter, the RADAR should be able to do a much more smooth job than a human could given that RADAR is much better at measuring the safety than a human is and, perhaps more importantly, better at measuring how quickly the safety gap is changing.
An example: Say the safety gap is not changing, everything is in a nice, steady state. Suddenly, the car in front starts slowing quickly and TACC starts slowing the MS. Meanwhile the car ahead starts speeding up again. Now, a human would realise that, because the car ahead is accelerating again, despite the safety gap still closing (due to the MS not slowing quickly enough) or being too short for the TACC safety gap setting, that s/he could stop slowing and allow the safety gap to open up due to the car ahead accelerating and therefore stop slowing the MS. The result is a 'rounded up' interaction without the harsh jerkiness of the MS trying to keep rigidly to its safety gap setting.
Personally, my main gripes with AP is that;-
1/ the speed warning can't be set to be a proportion of the speed limit plus a fixed number of mph, (a very easy fix) and...
2/ the safety gap does not work proportionally to the speed the car is doing - ie higher speed, automatically higher gap and VV. I think it does this a bit but nowhere near enough. Why can't we just has a slider to adjust it? Equally easy fix. MW