John
This is such a great question; with the Western world getting older yet more active, architects and developers are going to have to do a lot more thinking about getting past simply accommodating older golfers and making things interesting.
My first thought was any course introduced prior to the Haskell ball, especially links (higher likelihood of gentler terrain than inland courses).
But maybe that's more like "must have" rather than "delighter," or necessary but insufficient. Does it describe the ideal for accommodation but not the actual ideal?
So...maybe architects have to make the greens "interesting," but while some may like that (a lot!), others actually may hate it. (Not just you but apparently elderly golfers at North Palm Beach, for example.)
So probably it does go back to the links concept after all: create interest and challenge yet also a "rabbit line" (or whatever it was in that thread a while ago: lamb, play-with-a-putter, etc).
Real estate developers and marketers have so devalued the word "links" on inland courses you almost have to come up with a different word. But still..."links" it is.
A course I've seen that shows the real possibilities here is the Links at Hope Island. A modern, resort, real-estate, quasi-spongy turf, Florida-style, cart-golf, cart-GPS type deal -- but underneath the skin lie the bones of a links.
Look it up in Ran's course reviews.
Mark
PS The other thing old men need to learn to do is play from the proper tees. They're more active in their older years, but that doesn't mean they're 20 anymore...
PPS Really, you should get over to Scotland and play the "toon" courses, especially the ones that aren't famous. That's the model, in more ways than architecture.
PPPS Old man architecture = junior architecture? Maybe this is karma for all those people who didn't do more to accommodate juniors. Now they get to experience golf the same way...