Board Thread:Support Requests - Community Management/@comment-5283174-20140312193225/@comment-1330470-20140312200235

There is always a chance that someone will come along and adopt the wiki, and if it is out-of-date, then the pages can be updated. Lack of use of game or wiki isn't considered enough to justify deleting a significant amount of content pages.

Wikis with significant amounts of non-Terms of Use infringing content are rarely deleted, and individual page deletions or blankings are not acceptable alternatives to this. The most I can tell you is contact Staff via c:centrarpg:Special:Contact, but it sounds like you've already done that.