I totally agree that is a pretty darn good idea. I have a bunch of washers like that and never thought to try it out.
When I first noticed it on my bike I went to teh toolbox and grabbed a rubber washer and put it between the plastic and the metal mount, mine was cracked already so I can't tell you it helped, but the crack never spread until some asshat knocked the bike over.
There are other parts of the body work that use shoulder bolts (with the built in spacer) like on the lower part of the fairing and the rear fairing between the legs so maybe thats a potential use as well?
It just seems there could have been a much more solid mounting system for the upper fairing- it really only has three, two sides and the front, the rest is attached to something that flexes.
I can't wait for my Sharkskinz....mainly because it gets rid of the 6 upper fairing bolts and their damn tube nuts!!!
2001 #62. Ohlins rear/valves, Micron high mount, HyperPro damper, SharkSkinz, Tyga billet triple clamp, Tyga Carbon Fiber fender and hugger, Ti bolt/custom subframe/alien motion 8 cell diet, 15/41 520, COP conv. PCIII, Venhill lines, modified air box, turn signals in headlights...<deep breath> ZG Touring windscreen, Tech G rear sets, CRF450 rear master w/HRC cover, Tokico 6 pots w/V-pads, CRG Bar end mirrors, PSR Shorty levers-use only clutch, wanna-be basic racer paint, Roman Gold PC wheels