Other options could also be available to toggle with multiple view reps selected, but for me the most important one would be 'all hidden'. This would be extremely useful when you want to create multiple view reps that show only a single part or a few parts. The workflow would be to create the view reps, select all the view reps and toggle 'all hidden'. You can then select visible parts in each view rep individually.
I realise there are workarounds for this. For example, if you create a view rep with 'all hidden' enabled and then copy as many times as you like. However, if you forget to do this then each view rep must be tended to manually. Not a huge deal, but a nuisance nonetheless. I don't see any reason why the option shouldn't be there when multiple view reps are selected.
