We had several options discussed here and we may need to try a few out:
Mount the OLED where the MPU is currently and mount the MPU underneath.
This will reduce our vertical space underneath and may need to work around heat-sinks.
Maintain the MPU position and utilise a short cable for the OLED.
More flexibility, but also more things that can go wrong.
Maintain the MPU position and move the OLED position to free up access to the camera cable slot.
Current footer is back to front. Barrel jack position is crucial and there may simply be not enough room.
We had several options discussed here and we may need to try a few out: