Russian doll schemas stink? (was: Re: [xml-dev] XML "Smells"?)

> Russian doll schemas...
> A veritable dung heap. I am overpowered already :-)

Hang on a second... what about Russian doll schemas makes them an 
xml-smell? I mean, I can understand situations where openness and shared 
structure are goldmines for interoperability, but I can just as quickly 
think of 10-20 reasons why you would want to localize definitions.

Thanks,
Jeff Rafter