That is why I suggested to keep the 14 thru hole pins, for “makers”, but add two spaced B2B connectors on the bottom, that would replace ALL the small SMD pads on the “PLUS” board. This would give 60 pins to the bottom, more than enough to utilize all the pins, and power.
The “makers” could get a breakout board that has the two bottom 30-pin B2B connectors, as well as the 15 pin 0.1" for bread boarding,
The 0.1" pins could also be used to permanently fix a board, as to not rely on the two bottom B2B connectors.
It is a shame to throw away the opportunity to make the free 10 pins useful.
My board would interface the bottom 60 pins, with my own design.
The design would be used in thousands of boards.