>>966344It's a solid idea. everything is low and snug around the hips for mechanical efficiency, and back is uncovered for better flexibility/more natural stride and won't be so hot in warm weather.
with small shelters, especially floorless ones, I could see them being packed in nicely. a big poncho could double as raingear and shelter.
a thermarest neoair xlite packs down to the size of a big soda can, so that provides ground insulation
how about the sleeping bag? this is what I'm struggling with most. even a small montbell bag or enlightened equipment quilt will take up a few L when compressed