Wow, what a gorgeous sight! Absolutely worth the hike, and I hope I can visit there some day.
This might sound crazy, but a suggestion that came to mind is something that I personally find to be a slight annoyance sometimes: Have you ever given any thought to blending in an exposure that is shot at a faster aperture, to get LESS sunburst effect? The beams that jut down into the scene, but are basically non-existent on the sides and above the sun, are somewhat distracting because they simply look like 1/4 of a pie chart. And when I imagine the beams not being there, (such as in your recent Horseshoe bend image) ...I do feel I'd like the image better.
Overall of course, absolutely killer!
=Matt=