Tom,
I understand that you aren't talking about the type of course that I'm referring to, but going bunkerless for the sake of GCA. My only point, which might not have been clear, was that there are plenty of interesting shots to be had, especially around the greens, at even a marginal muni like the one I was referring to. With that being the case, it seems that a "bunkerless" course, with the effort made to create GCA features could be fantastic. Further, it's surprising that no architect has given that type of course a chance in the right situation. I suppose they would have to have a client who would be pretty bold as many courses seem to measure their "greatness" by the number of bunkers the course contains.
Also, it seems like a sandless course, especially around the greens, could be a way to really challenge the pros. As a matter of fact, one of the core values of GCA is challenging the best golfers and allowing a poor golfer to enjoy themselves. But greenside bunkers are ass backwards in that regard, so wouldn't a bunkerless green complex fit that value better?
In short, I agree with you completely, it would be invigorating to see what a great architect could come up with using no sand as defense.
Ben