For ARM, the Teensy boards and Raspberry Pi Zero are interesting.
Never Arduino LLC will accept,
and they have no reason to accept.
I'm afraid I don't really understand much of your post
No one else seems to have the discipline to stay simple.
It would be nice if arduino.cc would take Genuino worldwide and make it easy for vendors to buy some stock. It seems like there would be money to be made if the holes in the product lineup were filled in. For example, Adafruit is out of Micros and their web site still has old stock pictures of the product from before the company split. I think there would be plenty of profit and sales if the Micro, and Uno were all priced at a new low price of $18 USD, Nano at $11, and the Pro Mini at $7, and bring the Pro Micro into the official Arduino lineup at $7 too. ...
... Maybe I should be refreshing my PIC skills. I have several unused PIC MCUs in a drawer....R
This lawsuit could be the demise of "Arduino" as a hardware brand.
ps, unused is fine. $$s is $$s.