Maybe next year the April fools joke will be that theymos makes a thread announcing that he is changing his name to "thermos", but here is the catch, each person shows that their own display name is "thermos" and they have access to a fake admin pannel. The admin pannel shows a variety of fake PMs among various forum members talking about the "real" forum member. The admin pannel also allows for the user to edit any post, but doing so will only affect the user making the edit.
But we already have it...
Epochtalk https://bitcointalk.org/index.php?board=167.0Epochtalk will not be a April fool's joke, instead it will be a improved version of bitcointalk. The only question is when ?
By the way NFT's does not have any use case on this forum. For a perfect scenario, the forum first needs to have its own coin and then launch a marketplace for NFT.