Topic on Forum:Long Term-Perpetual Projects
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It looks like we used to have the page(s), but folks decided to get rid of them. I found this in the wiki's change log:
13:28, 13 September 2014 Gethbot (talk | contribs | block) deleted page Trope Pantheons (per wiki talk forum discussion)
That was about a year before I joined the admin team, so I don't recall what the reasoning was behind getting rid of the pages.