K l e i n wrote:

However, eventually the FAA will figure out that it is in everybody's
best interest for low-cost units to become available, especially, for
the sport/antique/glider/etc community that has no way to install a
fully compliant unit.

Good God! What makes you think that is the case? When has the FAA EVER
reduced the certification requirements of a piece of installed
equipment? I doubt anyone would argue that a pilot with 496 with WX is
in a better position to fly cross country IFR than the same pilot with
nothing other than an old VOR receiver and CDI. But only one of those is
legal for IFR flight.