Hi - good thread. Now I am the guy you like to fish with because I have absolutely everything, except my back is stuffed from trying to carry it. My more recent expeditions have been exercises in going minimalist, and I am seriously working on cutting down.
Now a couple of thoughts for must haves - a multi tool type device like Leatherman or something and you can pretty much leave your tool kit at home.
Garden or leather gloves and you wont burn your hand on the cooking fire or spike yourself getting wood.
A rake is great if have room, gets all that sharp crap out of the way before you put the tent up and lets you see if your'e on a ant nest.
I have lots of ideas for my trips, cutting down is the hard part.
"We do not inherit the earth; we borrow it from our children."