I don't think there's any need to try to mimic the Jolla Tablet; Jolla appeared to be aiming for showing off the beauty of Sailfish, and therefore went for a device with a maximized (retina) screen and minimal specs everywhere else. The Intel processor was probably chosen to get a subsidy from Intel itself. I see no reason to avoid AMD processors, as the Hybris Adaptations list has plenty of those listed, including several tablets...