I think a major change was to improve the physical connection and be rid of polarity; old port was fragile and prone to being forced in backward. Personally, a

I think a major change was to improve the physical connection and be rid of polarity; old port was fragile and prone to being forced in backward. Personally, as someone who gets a lot of crud in the port, I can say cleaning out USB-C is far easier than B micro, and less risk of pin damage. Though I agree with much of what you are saying, particularly the compatibility aspect