i did not read all the posts but the the kit should be labeled for a fast find and not just by the owner but by anyone who finds and needs to use it.big easy to read labels like PAIN-BEE STINGS-APPLY TO BURNS will help in those confusing minutes when first aid is needed.a kit that opens like Teacher said with gloves and pads right on top.
with all the small computer stuff they have now someone should make a talking instruction book.a RN sort of calm voice would say when you push the bleeding button.."remove the pad from the green package and push down on the wound" or something like that.
in the Army we were told never to use our own wound bandage on someone else,they should have one on their belt.thats something to think about in a large group like Scouts.everyone has a ziplock bag with the basic fast first aid stuff in it someplace handy.
that way if six people sprain their ankle the main kit does not run out of elastic wraps because everyone has one.