I disagree that videotaping rehearsals is
"it's *so much more* valuable to the producers"
Taping a complicated sequence for designers so they cast doesn't need to do it over and over again, it's pro-production - both producers and actors. Think about a complicated tech transition with automation, flying, etc, that has to be scored . . . run it once, give it to the composer and move on.
Think about a complicated musical, where a swing has multiple tracks to learn . . .
A complicated show that a new SM needs to learn calling it . . .
Fight / dance work - although this has been approved for awhile.
I never see it a solution as pro union or pro-producer, but looking for the solution that is PRO-PRODUCTION, and I see this as a win-win solution.