I like the idea of the extra step grabbing as a modifier! Definitely worth looking into.
The general issue I have with adding modifier keys though is that their introduction will cause a whole new series of button combos to be added, and I have to remember even more keyboard shortcuts.
The problem is that the front panel layout is carved in stone, no way to add buttons, and no way to have dynamic button labels. So everything extra we come up with will need some esoteric button shortcut that is not supported by the front panel. How much of these magic extras can one handle? Will the machine benefit from these new features, in the end?
Of course I love to add and use new features. Some come natural, like the added monitoring and rechanneling stuff. Some add complexity. I’m just saying that we’ll have to be careful.