I've said it before -- real dashcams are pretty sophisticated devices. Leave the dashcams to the real dashcam makers who know what they're doing. Any Tesla Dashcam software the release (if they do, I don't think it will ever happen, despite what Elon tweeted), is going to be the most basic, bare-bones, full of bugs software that barely gets the job done. That's also assuming the cameras can output a usable image (compared to real dashcams, that is). Yes, they do record and save the last few frames before and after an accident, but that does not make it a dashcam.
I'd much rather have Tesla spend software development time on fixing the media player and USB bugs and enhancing the Nav, as well as dozens of other REAL problems that need attention.