Took a look at the XML, but I didn't spot anything right off the bat that said "filter to turn off power/level pages." I was pretty curious how you managed that, but the only thing I can figure is the dynamicdata filter in the page properties…but I have that in the version I attempted (for power at least) and it doesn't seem to affect anything.
If you've got the time I'd love an explanation of how that dymanic hide bit works.