I've made a few more adjustments so I thought I'd update to keep it current:
-exchanged my 32 oz Nalgene/28 oz Kleen Kanteen for a 20oz Bubba Hero Bottle. It's a 24 hr cold/8 hour hot water bottle. It's a little smaller than the other two bottles but winter's knocking on our door and carrying a hot drink is going to become a requirement soon. Since this is an urban only bag, I don't want to carry a water bottle and a thermos or travel mug.
http://www.amazon.com/bubba-HERO-bottle-classic-navy/dp/B0087JLHE4-exchanged my goretex jacket for a Wind River packable annorack. Since I'll likely be wearing my goretex jacket or winter coat from here on out, I took advantage of the space/weight savings. This one's more of a water repellant hooded pullover windshirt. It's that's much lighter and should make a good additional mid-layer if needed. Works great with my down vest and a woold sweater to cut the wind!
-removed the LED glow stick. I've already got an LED flashlight and headlamp, along with my maglite solitare. 4 lights seems like overkill for this kit.
-exchanged my wool/fleece mittens for fleece-lined horsehide mittens. They're more durable and also warmer.
-added a small plano fly case to hold my extra batteries. It's got 4XAAs, 4XAAAs and 2XCR2032 in there right now and they fit perfectly.
-added a Vicks Vapoinhaler. Now that the cold weather is hear, the second-hand smoke is sticking to smokers and making me seriously nauseous. Vicks is a godsend in those cases!
-Doug made me hungry when he listed his travel kit contents and he inspired me to added a tuna and crackers snack kit as well.