Hey, each to their own
I suppose it would depend on the show, just don't know if it would be for me. Maybe if I had an array of iPads.....?
I think most people do like individual faders, however, that seems to be fading into the past. Even large digital consoles don't typically give you direct access to all of the faders at once, you generally have a few layers or pages of faders, no different than an iPad.
Now the better consoles will typically allow you to pick a few priority channels that will carry over no matter what page or layer you're working on, that would be a nice iPad feature, i.e. to always have your two or three vocal channels always on the left side of the screen.