I hope next days I find time for testing my breakouts first. My break through may be earlier by using user space usb drivers . This evening I found the other important link GitHub - skjolber/external-nfc-api: Interaction with external NFC readers in Android . If all works out well than a new custom rom maybe forgo or can be avoided by using the external nfc app. I guess most people will try to print out their own cover. So a new design only for NFC breakout inclusion will soon be necessary.