I would be interested in the ambient light feature only, if the module was half the price. I don't miss the ambient lights, but if I could enable them on my SR+ then I would pay to do that. But my 2020 SR+ doesn't have the pocket lights so that's a bust.
The rear heated seats controls seem a little hokey, but accessing it seems easier than going through the screen hvac menu to turn them on. I bought the Rear Heated Seats upgrade on my SR+ the same day when I picked it up, but that's because my kids like to have a warm seat when they sit in the back. Plus, on those "cold So Cal" mornings when I want to warm up the cabin and turn on the heated seats, I can do any or all seats via the app. With this module, you can't pre-heat the rear seats.
That being said, I rarely put any of the seats on the highest setting since they warm up quick and can get really hot. I wouldn't want my kids to have their own control of the heated seats via the window switch, and then panic when they can't figure out how to turn down or turn off the seats while I'm driving. I like handling the controls for them from the front seat.