I would like to think I am working on a new hardware platform. I have been scanning the landscape of microcontrollers/embedded Linux devices for a number of years before discovering this particular device:

Luckfox Pico Pro Max

Benefits:
Runs Linux -> porting seedsigner code is significantly easier than a true microcontroller. No micropython needed.

No onboard WiFi -> for whatever reason all alternative embedded Linux boards all include WiFi. This was a really difficult obstacle actually. 

Ample memory -> can run Pillow, etc. the code is 99.1% the same!

Camera header -> similarly to the Rpi this board has a CSI camera header

Not a raspberry pi -> an answer to the loudest FUD

Not a microcontroller -> while I support enabling new hardware platforms, I think seedsigner is best if we coalesce around “Linux”. The effort needed to port to micropython is unnecessary. There already exists Krux. Play to our strengths.