True, but we have CAAR now. And it took years to get that after the idea was first proposed. So you can use CAAR to accomplish this today, or wait until 2014 or so and use polygons. But by then there will probably be an even better way to get the data.
Hehe, I see your point, it usually takes quite a bit of time to get new features implemented
Nice idea about the CAAR though, I have never really thought of zigzagging like that before, I will give it a try next time I'm going on a caching trip.