My seats are still comfortable and in reasonable shape...but how
about taking existing seats to a shop and have them re-done? Anybody
considered that?  There are still upholsterers out there that do great
work...

  We do that in the motorcycle world...have a shop make us seats that
use the existing framework but are fit and upholstered to our liking.

  If I were forced to drive my wife's Subie Forester all the time,
that is what I'd do to that one...that seat gets me in about 1hr no
matter how I pump up the bolsters, move the back, add pillows,
whatever...It just plain does not fit me, but it certainly could be
fixed so that it does allow me to drive comfortably.....