This is where it would fall down for me.
I hate touch screens and panels with an intensity that most folk can't fully understand, myself included. The display part is fine. It's the physical buttons and knobs that I miss.
Also, ONE set of buttons and/or knobs is easy to learn. Nested menus with a variety of different arrangements of clicky bits are hard to assimilate. I don't even bother these days. If something is nested behind a menu it simply won't be useful to me.
I think it is because these devices are not tactile. I see some touchy keypads offer a vibrate function but that is hardly addressing the issue.
I do admire the concept of shrinking hardware but I would need physical knobs and buttons large enough for my large hands to operate by feel if necessary. Miniaturisation just for the sake of it is a pain in the Adam's apple.