Here's a quasi-good thing -- a feature that seemed to have been deleted but is actually still present although very hard to find. In version 8 and 8.1, the automatic function of each area in the climate-control panel could be turned off and on individually (or all at once if preferred). In version 9, if one manually turns off the AC (to conserve energy and range), the fan speed stays on whatever it was running when the AC was turned off. There is no way to enable automatic fan speed with AC off. I still think that's a glaring flaw in the new interface, but it was pointed out to me in a different thread if one uses the Menu to select Fan as the function of the right scroll wheel, then pressing the scroll wheel will set fan speed to automatic, and it stays automatic if the function of the scroll wheel is then switched back to adjusting the temperature. This option is NOT described in the only owners manuals that we've had so far.
(As I understand it, in the Model 3, there is still no way under the sun to regain automatic fan-speed control if the AC is turned off manually, possibly making the Tesla Model 3 the first car since the invention of automatic climate controls to lack this feature.)