I really appreciate your quick reply, as customer support is key to success in this business. Good job!

Please find my answers below.
I do think this is a good product, but... As an embedded developer myself, I think this product just need some time to finalize. I hope you find my feedbacks helping that. Before I continue testing, is there any update package for this unit? MCU version: MTCE_KLD_V2.80_1, Android version: 8.0.0
1. I would not say it is a deal-breaker bug, but a bit unsafe to take out my phone from my pocket every time while driving. I hope we can find some solution in my 14 day return period, because I use these third party apps mostly instead of GSM and I am sure others too these days.
2. A dedicated knob is to make it possible to
grab it blindly while driving to select the next stored station or to search a new one
quickly and easily! Now it is not possible blindly, one has to look at the screen and push button on screen. Not safe!
Nobody is searching any station in 0.05 increments
while driving. Especially not click by click. As it is a not free rotating knob, click means rotate and release every time, what is even harder to do. Again it is not a deal-breaker, but this is a waste of a dedicated knob as it is now.
I found a workaround to make the knob select next station in the factory radios in "Factory Settings" / "Key Study". But then I had to reprogram all the other buttons too, one by one. (Key Study overwrites all other button functions, not just the one you want to reprogram.) Not really good workaround for users. Also, it might mess up other functions of the buttons/knobs.
As the factory radios are free rotating knobs + dedicated search buttons and this product has only one not free rotating knob for these, I would suggest the following to make it more useful in real life driving scenarios:
Short click: Next/Previous stored station
Long click: searching available stations up/down
But in the radio app searching/tuning screen:
Short click: manual 0.05MHz increment/decrement (this is where this function makes sense in real life!)
Long click: searching available stations up/down
BTW, the search station function is available on screen in the app already. Just not programmed to the knob yet. These are small details what make a product GUI more user friendly. But agree, give a hard job for the programmers to consider all of them. This is where user testers help.

3.
Not having android auto is a deal-breaker for a lot of people. (Look Amazon feedbacks!) This is one of the reasons we buy such a smart device to help
handless operation while driving, therefore more safety. I hope the limitation is not in the hardware, so a solution can be found by your engineers. Because connecting another android device to this (on its own quite powerful octacore) android device with Auto Play is not really a convincing workaround. Especially, as the Auto Play is optional, and not really cheap. If Android Auto support is not considered on this product or cannot be solved in the near future, please let me know.
4. Thanks! Was my Oreo inexperience.

5. Happy to help in testing.

6. Great! This raises a question what I have not tested: is it supporting USB HUBs? I will need at least 3 or 4 USBs later on.
7. Thanks! Was my Oreo inexperience again.

8. I could not find idle/operational/peak power info about the device. "Specs" on your the product page gives an empty page. Any numbers?
Kind Regards,
OHD