A fork which only flips the 'inclusionist' bit is clearly the wrong approach.
Wikipedia is still very good, and a fork with the same 'encyclopedic' mission, software, and general format – but inclusionist – would inherit all the stresses that made Wikipedia become deletionist. It'd also still have to compete with Wikipedia for the critical mass of attention and contributors who like everything about Wikipedia except for the deletionism.
The reference-information successes have explored territory a bit further from Wikipedia, in content (Wikia, wikiHow, tvTropes) and format (StackOverflow, Quora, IMDB)... so that's what Thunkpedia is doing too. Whether it succeeds or fails, it won't fit neatly into your list of 'inclusionist Wikipedia forks'.
Wikipedia is still very good, and a fork with the same 'encyclopedic' mission, software, and general format – but inclusionist – would inherit all the stresses that made Wikipedia become deletionist. It'd also still have to compete with Wikipedia for the critical mass of attention and contributors who like everything about Wikipedia except for the deletionism.
The reference-information successes have explored territory a bit further from Wikipedia, in content (Wikia, wikiHow, tvTropes) and format (StackOverflow, Quora, IMDB)... so that's what Thunkpedia is doing too. Whether it succeeds or fails, it won't fit neatly into your list of 'inclusionist Wikipedia forks'.