Sorry for this moving but looks like more relevant here
If you reread the thread (around the page 12) you should find all my kernel experiments. I was able to start this rom with almost every 3.4 kernels.
IIRC stock M blobs refused to start with something like "Can't start, unauthorized". A DRM thingamajig I can't figure remain somewhere, *not into the bootloader or in the TA partition* however (experiments also in this thread), it is kernel related.
Said often I make mistake, maybe made something wrong on my first experiment, so if you are comfortable enough to experiment you could try with this cm-13.0. It is (almost) stock based, then replace with stock blobs. (maybe leave the hammerhead adreno in place to keep device booting).
Also the only remaining test to do is the same one, but with concept. Maybe the open sourced concept kernel can start the associated blobs.
Good luck and keep us informed
CC: @tomascus
P.S.: I think it is easiest to do those experiments on CM-13.0 because it is M and will not require shim to work properly.
P.S.2: tomascus: if you can provide me a q&d stock kernel I can test if a custom build stock break camera on full stock device.