I've followed both sides of the issue, too. I believe that subpages are a bad idea because they discourage clear thinking about what the encyclopedia article's title really ''should'' be. I'll go along with the multiple-namespace idea, as long as the ''purpose'' of ''each'' namespace is ''clearly'' identified. So far, I like the namespaces that Magnus has come up with.
I also agree that the new software should be smart about linking to parent pages. I think it's better solved with software than with subpages. The idea of a back-link feature has been tossed around. That was a feature of Ward's original WikiWiki. It's helpful.
<>< [[tbc]]
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