Hermit,
Have you considered a more packable (smaller) tent & pad? Either a
Henry Shires Double Rainbow or a Rainbow (http://www.tarptent.com/products.html). Both pack 20x4. Or if you're adventureous, a Six Moon Designs Gatewood Cape (http://www.sixmoondesigns.com/). I'm not familiar with the Tree Frog but I'll bet you'd definitely loose a lot of weight & bulk with the Gatewood Cape. Use tyvek for your ground cloth. Switching to one of the Pacific Outdoor Equipment Uber-lite series
(http://www.pacoutdoor.com/2005/index.cfm) might still work with your T-Rest chair. It's definitely going to cut weight & bulk. If I were to go back to ground dwelling I would probably go with a Gatewood cape (dual use item),with the tyvek & look hard at a POE Uber-lite.
I'm sure your kitchen is one pot & one cup (when going solo). I really like my Snowpeak mini-solo cook set (http://www.snowpeak.com/back/cookware/titanium.html). All my cooking stuff (short-handled spoon, soda can stove, spices, etc.) goes inside the 3 cup pot. Except for the small alcohol bottle (10 oz)! You could even go lighter & less bulky with a Heineken beer can for your pot (packed inside) & an insulated cup binered onto the outside of the pack.
Don't know what sleeping bag you're using but consider a quilt. I've got a JacksrBetter No Sniveler regular (http://www.jacksrbetter.com/). The No Sniveler triples as a serape (It is warm!), a quilt with a footbox, or an underquilt for my HH.They make heavier (more down) & wider ones also. Will probably get a Rocky Mountain No Sniveler when I save up the money. For extreme light weight (& bulk) a blogger (Gardenville) (http://ultraliteskunkworks.blogspot.com/) is doing some incredible things with cuben fiber. This is stuff that would blow Ray Jardine's mind!
One thing I've found is that when I'm willing to think out of the box I can really cut the weight & the bulk. Example. What to do when I have to go to ground in the HH? I have the two 25"l x 20"w 3/8" ccf pads. Not much padding there. I went back to Horace Kephart's "Camping and Woodcraft",borrowed the idea of a "browse bag" he used for insulation and padding & took it to the next level. I have a large (40 gal) garbage bag (which I have used) & fill it up with leaves & moss. Good insulation & padding.
There's always something to re-think. If Grandma Gatewood was able to thru the AT twice (once NOBO & once SOBO) with just a sack slung over her shoulder & keds I can take a look at what I'm carrying & do some mods too.
R.