It should be doable, I have looked at the aegis interfaces from the neutering point-of-view before...
Maybe I will try that at least to see if I can get the device to boot up anywhere near usability

/somewhat_off_topic - It would be really helpful if I had another N9 that I dared to hack a serial console to... debugging kernel bootup problems is a real pain when there is no useful console whatsoever. Gutting my prome device is not an option...
It turned out to be nigh impossible to have a correctly working FB console on the device, or at least it would require some major tweaking to work