as an evolution to the thoughts on the 24" softride thing:

285mm bb height. 135mm rear spacing. 20" [406mm] wheels. clearance for 44mm tyres.

mounts for mudguards, a milk-crate sized rack under the beam, and for a rack on the headtube [so that the rack doesn't move when you steer].

cable disc on the front, maybe one on the rear too with one of those funky tech-wank-fodder paul disc-mounts. provision for mounting v-brakes, sidepulls.

stainless steel track-ends with integral axle keeper type things [like the paul ones]. mounted far enough forward so that if all the racks and stuff are taken off, the rear wheel can be pushed right up to the bb, but long enough so that with a milkcrate on the rack, the axle can be behind the center of gravity of the crate.

[apart from all that: white industries hubs, hed jet40 rims, campy pista chainset, chris king threaded headset, carbon bars [bullhorn or drop]]

i'm getting a semi-on just thinking about it...

fsnl
sparky