i'm not sure if this could work or not, but i think it would be useful to be able to drag the desktop area up and down in addition to the left and right areas already provided.
i own a droid (running android 2.0) and the 3 pages of desktop is starting to get a little cluttered :\
I would suggest searching for a cooked rom for the Droid( or sholes, it may help) and see what you find. Cyanogen added more home screens for roms on the g1 and magic, the pulse rom's 6 pane hm screen was awesome, if you can root and find a working pulse rom for the Droid I think you would love it.
Good luck.
I would try GDE, it's on the market.
It can have up to five screens, and you can set it to look pretty close to the normal desktop.
Advanced launcher on the market lets you change how many screens and a lot of other useful stuff, check it out
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