Beagle - I agree.
But that's what all the GA manufacturers are doing now; one cannot give away a plane unless it has a "glass cockpit".
The panel layout needs to be designed from scratch for these large LCDs but this happens only on turpoprop class and above. The rest just bolt them in.
I would not buy a plane with these displays; not for 2-3 years. Technically they are unproven for reliability, and unless one can swap the functions of the two displays (which is possible only on some brands) a failure of one means a lot of information is lost.
A glass cockpit has the potential to very effectively address the persistent poor reliability of avionics, where things pack up just because it happens to be winter and it's humid, etc. It would have been easy to make an LCD unit sealed, and likewise with the remote reading sensors and gyros. Unfortunately, none of the GA products are sealed (airtight), so it's back to square one; little prospect of avionics shops being short of work.