Get back when you get people to agree that:
propriatory code + gpl'd code you own copyright for + gpl'd code that you don't own copyright for = perfectly ok.
I don't think that your realy going to work around the issue.
The ndiswrapper is different as it's more of a generic loader and the windows drivers are clearly 100% not derived code. There are absolutely no restrictions on what end users can do via the GPL license. Personally I could steal W2k source code and shovel it into the kernel code and that is 100% ok as far as the GPL goes. Problems crop up however when you want to ship it to other people.
As for shipping working ndiswrapper drivers.. that's even worse then the nvidia stuff.
Not only are you violating the kernel developer's copyright license, but your also probably violating the licenses provided by the windows drivers writers who probably signed licenses with Microsoft stating that their code is only allowed to run on MS operating systems.. which seems the standard stuff for Microsoft's software licensing.
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