I just returned from doing a variation of a route Peter B. Scott describes here. Perfect weather, skeeters a non-issue. During the Ansel Adams Wilderness portion of the hike, I saw no people whatsoever, despite visiting several lakes serviced by trails and even hiking on trails myself once or twice. Once upon a time almost all of this portion of the Wilderness was part of the park itself. There are dozens of gorgeous subalpine lakes in this area.
Chittenden:
Lillian (note Porphyry-style rocks in foreground):
Heading from Lillian to Rainbow:
More pictures