It’s one of the first things I would expect from a site like this. I know that J.K. Rowlings views are very controversial to put it mildly, but:
- The fandom/books are not the author
- Harry Potter will become a part of the Fediverse at some point anyways - better to support it early on and shape its developing rather than having a company build a H.P. social network on top of the fediverse, which will be to our disadvantage
- In terms of potential users, this could be huge for the threadiverse
- We are in the Fediverse: defederation is always a possibility
Or was it just never tried before / no one wanted to yet?
Perhaps because there aren’t actually that many dedicated Harry Potter fans on the site? It is quite small, and a bit niche as it is now.
Create one yourself. Nothing is stopping you.