1) Why do you have a shell + soft-shell pants? What about wind-pants instead, or neither?
Recommendations from combing the web and personal experience in winter conditions. My experience seems to indicate that softshell pants wet through too easily for sustained use and windpants have the same problem.
2) Wool Mittens seem heavy and overly-redundant
Agreed. Nixed.
3) Consider nixing the Cyclone Buff and Merino beanie and replacing with a Black Rock Down Beanie (save ~3 oz.)
The Cyclone Buff is for wind protection for my neck mostly, as well as extra insulation. I like its versatility. The Black Rock seems like a pretty sweet piece of gear. I may try it out and nix the smartwool.
4) Nix the Snowpeak double-wall mug – just use the bowl for drinks (save ~4 oz.)
I kinda agree on this but other recommendations and web research says that one would be nice to have. I've never found a need for one though. I think I will drop it.
5) Take an extra lighter or spark source (+ .5 oz.)
Good idea. A firesteel is light and reliable.
6) Instead of 2 locking 'biners, just use two wires opposite and opposed for your harness and just use non-locking for everything else. (save ~10 oz.)
I am actually wondering if a rappel device might only be needed for descents. I don't foresee any need to use an auto-bloc to belay a second. In which case I can also go with a different and lighter rappel option.
7) OR Water bottle parka (can you make a lighter one out of reflectix or ?) (save ~6 oz.)
The O.R.'s are a bit overkill but are tried and true. I don't know of anyone who makes a better cozy for waterbottles.
8) The thermos's are nice, but if your cozy is good enough, why bring it?
Agreed. Nixed.
9) 48 oz. Nalgene for a pee bottle – that's a serious bladder! ;)
Rather be safe than sorry. Maybe go a few times in a night.
10) Ascenders – use Tibloc's, but practice in advance.
Agreed. I already have a few.