There's an error in the "Displays OLED" pattern library. The pattern named "DISPLAYVIS_EAOLEDL128-6GGA" should be "DISPLAYVIS_EAOLEDM128-6GGA".
Note the "L128" vs "M128". This pattern has outer dimensions 55x42.88mm, which is correct for the "M128" variant. The "L128" variant would be 67.8x47.96mm ...

I've just briefly tried to create my own plug-in. No luck. DipTrace can't run it.
My underlying issue is probably my IT department (surprise surprise), who have limited my ability to create executables. I can create them in a specific "trusted" folder but it's not lucky to then copy them elsewhere ...

Yeah, I'm moving ahead with export to ODB++ and uploading to Aisler's site. Seems to be good that way.

I thought I'd try out the Aisler integration, but there's a stumbling block.

I've designed my board around 0.125mm traces & spacing. That seems consistent with Aisler's 2-layer ENIG and 4-layer ENIG processes (spoiler alert - when I export to ODB++ and upload directly to their website, everything ...

The pinout for STM32G070RBT6 has an error. There are two pins labelled PA1 and two labelled PA2.
Pin 28 should be PB1, not PA1.
Pin 29 should be PB2, not PA2.

The PCB calculator is cool. It might be handy to add calculations for vias, a bit like this website:
https://circuitcalculator.com/wordpress/2006/03/12/pcb-via-calculator/
A common question might be "what's the heat rise of the selected via at X amps?". Or, more likely, some guidance for the ...