Could there be any use for the fathom neural USB stick. It's supposed to turn a linux PC into a supercomputer. It's mostly used for graphics, so maybe it could speed up the processing of Qubes' PDF conversion process? Or maybe it could be trained to monitor the normal running of a Qubes PC, then issue alerts when it detects something wrong - e.g., excessive CPU or RAM usage, programs running or commands being issued in the background, or ports being scanned or pinged, etc - that would indicate attempts to compromise the PC?
http://www.movidius.com/solutions/machine-vision-algorithms/machine-learning