Thanks Jan for the feedback.
We discussed with the working group on how to approach pin-names, specifically for the Arduino Uno connector. The main problem was the lack of portability of applications that make usage of the Arduino Uno pins.
Some boards don’t have Arduino Uno connectors. Other have, but aren’t really compliant.
There might be other connectors (e.g. PMOD, Click, etc) and we want to differentiate these pins.
Regarding the SCL/SDA pins, the Rev3 standard defines them near the USB connector as shown in the developer guide, hence it shouldn’t be a problem. Perhaps @facchinm and team want to comment?
Dx/Ax pins continue to be available as generic signals, although we won’t be able to ensure that all applications will work well with all boards due to the diversity of connectors. Hope it helps?