Hi there,
I’m concerned and can you verify " * WE are basically trading off features (factory data, OTA, fallback) to make the build fit in internal memory. is this the case ?
- It’s fragile: if you corrupt the single image, recovery must be via hardware (e.g. SWD) rather than fallback.
I hope this is NOT the case, I hope someone tests for this as well.
Bleeding edge here so expect to get some cuts folks. 
HTH
GL 
PJ 