You're a brave man for posting your list and opening it for scrutiny. =) I'm with you though, I've been working diligently over the years to lighten my pack. I'm nowhere near the ultra lighters (and probably never will be) but the 10-15 lbs I've shaved off my pack over the years has done wonders for my overall backpacking experiences. Sounds like you've done a good job already. I'll add my 2 cents (mostly because it's fun)...and I may repeat some stuff that's been said...and keep in mind I'm no ultralighter...I just like to shave weight here and there each year.
Pack - seems ok to me (mostly because mines heavier that yours. haha!)
Pad - good
Pad pump - could ditch but i understand why you bring it
Pillow - could ditch and use puffy like larry said, but you admitted it being a luxury item
Tent - as good as you'll get for a freestanding, simple tent. (edit:
@Vegan.Hiker totally got a cool tent. Get that one!) =) I use the same one when sleeping two. I'm considering a tarptent as well (Rainshadow 2 because I hate sleeping shoulder to shoulder, hip to hip when sharing).
Spot - Great idea, good safety, but I don't use one. Maybe if I went solo.
Headlamp - I dropped a TINY bit of weight going to a 1.06 fire fly. Not super bright but gets the job done.
6L bladder - could cut for alpine hikes maybe (once again, I understand why you like it)
Esbit - I considered the same thing...stuck with canister and snowpeak.
Nalgene/Camelbak bladder - I used to take one of each...saved lots of weight by just taking 2 cheapie water bottles. Good job. I think your review of the steripen got me thinking about carrying less water (mentioned below).
Toothpaste - I just got some chewable toothpaste things. Just for fun!
Battery back - it's a shame it's so "heavy" but awesome to have with your phone I'm sure.
TP - Use rocks and snow dude!! (totally kidding) =)
Poncho - 7.4 oz pretty good. I tried a dri ducks top (about 4 oz). worked pretty well. no pockets. only lasted one season. but was dirt cheap
Multitool - I leave mine at home now. one of my hiking buddies usually has one and I rarely find myself needing a blade or tool.
Paper maps - sometimes I'll take photo copies of one part of the map and leave the full map at home.
Packed water - I've started to hike with as little water as possible and camel up when I can. =) Requires common sesnse and a little planning.
Food - I like my food so it's hard to cut weight here. I cut out cocoa packets and switched to good earth sweet and spicy tea. very sweet and tasty.
Camera gear - makes me cry that you have to pack so much weight. But you awesome photographers are awesome for packing the stuff in.
I doubt any of that was helpful but it was fun to comment and compare what I do to what you do. Maybe something I suggested will save you 2 oz! Keep at it and I'm sure you'll find ways to cut weight. We're all hoping for you to get back at it with a healthy knee.