As a former "Bus TRI, I don't see it a bad idea for these airplanes to have a "Direct Law" switch...the PRIM discrepancies on the (Qantas was it?) A330, and other incidents causing the airplane to deviate uncommanded from its desired flight path, would IMHO warrant this option to the pilots..AVIATE NAVIGATE COMMUNICATE and finally MANAGE...when the aircraft systems prevent one from the "aviate" bit, it sure makes things difficult