|from Wilderness Survival Guide, page 106|
I am not entirely convinced that this is better than the method I've been using (and I've seen others use) which keeps the orientation of the hexes. The tradeoff seems to be that things "fit better" if you change the hex orientation on each level of refinement, meaning there's less "duplictation" between neighboring large-scale hexes. In any case, I'll try both methods for a simple example and we'll see what the results look like when I get done. :-)
Edit: Obviously this only works for individual large-scale hexes. If you try to "tile" things the "surrounding" large-scale hexes will end up with a totally "uneven" number of small-scale hexes.