F1 should keep standing starts, but double-file rolling restarts might be interesting.
As for cameras, I know Interlagos had a camera on a track about the pitlane that followed cars along, and at the Hockenheimring, there is a zip-line camera between the turn 4 hairpin and turn 5 (the bit where the Ferrari’s swapped, if that helps visualise it).
Montreal was always good for hiding cameras in kerbs and fences. There was always 2 cameras (front and rear facing) in the barrier on the exit of turn 4, whioch showed how close the cars got. Don’t know if they’re still using it though.