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@allObjects
Board variations 1..3: Either 1 or 3. Variation 3 is still 1" and with USB 1-1/2" long. A possible combination of 1 and 3 (with manufacturing price impact?) could be a 'break off' of a double row of through holes.
Another suggestion I have is to have through wholes for GND and 5V+ in/on the USB (or 5V separate) just close to the board like the battery connectors on 1v3 regular board. The USB socket contact piece is a bit set back compared to the socket face. Using that space for the holes allow to solder wires (with connector) to power supply and still plug-into socket of cable or computer. Using this space though prevents the idea from having the pads for soldering a mini usb onto it.