I don’t have much experience of glass cockpits although a hybrid was introduced into our 146s just before I retired.
You people seem saying that the all-singing all-dancing display has serious drawbacks when compared to old fashioned round dials; I can well understand the reasoning. But do you have problems with electronic displays that look and behave like the old analogue instruments? Surely modern electronics are far more reliable – and probably cheaper - than “steam” driven instruments? Does, for example an electronic (digital) turn and slip exist? I have in the back of my mind the concept of an alternative display that mimics traditional instruments but is actually glass (electronic). It would be a good system in training aircraft but being so out of touch now (12th year of retirement), for all I know such things already exist.
Jack