Anyone willing to brag about a display driven by a 3100 isn't seeing the big picture. Honestly, if I need to be so concerned about my display, but not care that the graphics performance is approximately 20% of the capabilities of the newer MBAs, I probably wouldn't get the big picture either.
Snow Leopard absolutely makes an original MBA even more obsolete and inferior. And the future will only mean greater and greater advantages for the OpenCL capabilities present in the 9400m that are non-existent in the 3100.
If you need a different display than offered by a rev B or C MBA, you should honestly buy a 13" MBP. I would gladly carry around an extra two pounds and a thicker form factor long before I would miss out on the capabilities of Snow Leopard and be stuck with a 3100 in an original MBA.
Seriously, if one is stating their PowerBook G3 is powerful enough so they will be happy with an original MBA, they too are missing advancements in technology and the whole purpose of the "upgrade" in the first place. If one cannot afford, or isn't happy with the rev B/C MBA with SSD, they should pick a different Mac.
Buying an original MBA now, with its given inability to capitalize on the advancements of OpenCL and Snow Leopard, just to save a few hundred bucks is, in my opinion, foolish with their money and unable to see the future and purpose of advancing technology in the first place. Seriously, it makes zero sense! I will never understand investing in old (no completely OUTDATED) technology just because you will save 30% over the new model. As a value proposition, with Snow Leopard's advantages being so clearly spelled out, and it being only two months until release, the original MBA has to be the very worst value of ANY Mac for sale by Apple in a sense of it being completely incapable and outdated in just two months.