Sorry for being late to the party but I had a need and you had the question. Ignoring the elite editors, of which I am not one, (I only have 24-years) I can say an iPad app would be a great help if it could locate the tiny frack’n pull-down menus (that are currently located on, what I consider, the wrong monitor) on a larger, easier to see touch interface. There are 18 widgets, pull-downs and pallets on the UI’s various windows and bars. And, from my perspective, they are uncomfortably tiny targets for the mouse pointer.
I can work with them now, sure: I do work with them now. But I just feel it would be a boon for ME if they were on this iPad I have open under my main monitor, just above my keyboard. Maybe not? Reading the other answers, I seem to be a limited use case.
Again, just my 2¢.