I especially liked the Alaska Basin. Coming down into the South Fork of Cascade Canyon from Hurricane Pass is out of this world beautiful.

A rather unknown backpacking destinations is the Bob Marshall Wilderness in Montana. Glacier takes all the attention, but the 'Bob' is so remote that I've never felt 'wilderness' like I did there. .

I also think that the Uintas are truly only appreciated by Utah locals, but if the world knew it would become as cool as the Wind Rivers.

You also forgot Yellowstone. The southwest quadrant from Old Faithful to the Bechler is nothing but a pure romp. Hot springs and waterfalls with easy hiking.