I can save time. Historical Note: I am the original author of Expert Retention, although the ideas in the page have certainly been massaged over time. If you try and change anything policywise towards progressive or sanity, one runs into the Anarchist PickAx. This is a group of metapedians who will constantly tear down policys back to anarchistic states. It's quite fun for them.
This why fork and we can all love one another at Wikipedia is great for the content argument. When it comes to politics, WP is a complete mess and perfect example of why Roberts Rules of Order and bureaucraies are created. Simply, Anarchism doesn't scale.
"Duplication of work" is a legal and license problem, not a content issue.
Questions like "What benefits can we expect in long term by launching a new project, instead of trying to improve Wikipedia?" should be posed in a clear way and thoroughly discussed.
Has been for years. Blog.citizendium.org summarizes some top quality "Official" arguments. I pose this question: "Wikipedia is unimprovable. So why are you still there?"
-Jason Potkanski