Chris, you wrote
1) The recorder is triggered by a remote cable which uses the camera’s tally light. I am not sure I would stake my reputation on such a method.
As far as I know you could use any trigger to start/stop. Just put a small switch on your remote (lens) control.
2) It is not clear if the hard drive records the user bits, so I am unsure if 24p or variable frame rate would be an option. Not sure how to remove redundant frames in J2K format.
I don’t know. We have to find out!
3) The hard disk is a spinning drive, which does not like lateral movement or vibration. Solid state would be the solution, but the drives are very expensive.
I am using 2,5 inch drives for a long time. They are quite tough! You could buy also drives with G-force protection. And as you wrote you could use also a 2,5 inch solid state drive. 120 GB (!!!) for $ 300. That’s better than P2.
If the Elite HD could store the redundant frame information it would give the old Varicam a new life.