A video addition to CVR data would not be a bad idea.
As long as the "privacy" rules of CVR's apply.
And there is never, never any chance of the footage going public.
For what it's worth I was torn up over the Lexington crash. I am horrified by the fact that I can see something like happening - just a little bit of complacency / overfamiliarity, combined with the stress of your company going bankrupt, your family (with small children) in your hotel room during a layover, some taxi closures and changes.... I cannot demonize that crew. Plenty of us could have at least travelled partway down that path.
As for Buffalo, if a shaker makes you pull hard on the yoke, you probably shouldn't have been typed....