Re: the idea of a black Spiderman?
"b) A black teen, who gets spiderman-like powers"
Yes, I think you raise a good point. There's no need to mess with "history" to re-create long running characters as something different to what they are and/or have been for generations of kids growing up. Create new dynamic, heroic roles, be inventive instead re-booting the same stuff again and again. (although to be fair, many of the original TV and film incarnations of superheroes from Marvel and DC in the 60s, 70s and 80s were pretty crap even at the time. Original Captain America anyone?