Get a 4K TV!
I use one as my main display, with a 23" touchscreen on each side of my desk, with a MixConsole fullscreen on one, showing all channels except inputs, and the other has all the little Cubase windows, including a small MixConsole with inputs, as per:
Use Cubase iC Pro on a phone or tablet. It’s customisable cue mix view is way better than using the horizontal cue send sliders in channels, and you can have up to four of them. But Cubase only! Note that a 7" Android tablet will only show the single ‘phone’ view.