Does anyone here think that a wiki like this would be a good idea? Does anyone here have any interest in helping to create such a wiki? If I created a wiki like this on my own, would anyone have a use for it? Is there some other reason I'm not aware of, why creating a wiki like this would be a very bad idea?

Some people, when faced with a problem, say, I know - I'll start a wiki! Now they have 2 problems.

I said something similar yesterday, and I have a short essay, Wikipedia And Other Wikis about why forking off WP is a bad idea (which is a related bad idea).

tl;dr: network effects are a bitch