I don't think you'll see cockpit cameras with public access ever again. The folks on the AA DC-10 got to watch the barrel roll onto the ground when the engine separated (late 70's) Public cameras dissappeared quietly after that. With passengers using "fear" as a justification to sue, showing them a cockpit image with little context within which to understand what they are viewing is pure trouble for the asking.
A for their safety use in post accident investigations, perhaps. Many questions have to be answered about access to this information before any pilot will fly with them. In any case they better be flush mounted:
"The problem to deal in the future be - the desire for some airlines to install the flightdeck cameras. What'ya gonna do then?"
Hang my hat on it!
PT