Hello I'm Logan, the admin of the French wiki (and also the developer of kagescan.fr) ! (My english is not perfect, don't hesitate to report grammatical errors)
For a few days, I had an idea in mind : why not hosting the kagerou project wiki on an independent or self-hosted platform (like Baka-tuski.org) ?
I'll explain here the pros and cons by doing this. Nevertheless, moving a wiki requires a lot of work (if alone, as much as the fangame : years), that's why I'm asking here for your opinion.
Independence of the website
The main argument to move into a self-hosted solution is the independence of the community. Running the kagerou project wiki depends on a lucrative company which is Fandom. As a company, they are only profitable by showing advertisements inside the wiki. Even though they hide ads if the user is logged in, there is no option to add a custom domain or remove ads for guests.
Another argument would be customization. It will be possible to have a custom domain name for the wiki. We might also develop things that don't actually exist in the wikia, or host/integrate in the same place different services (like Kagescan ? The idea of a self-hosted version came from this, because every content on the website could be posted with a URL almost identical to its wiki page, so switching between posts, its translation tool and the wiki will be very easy)
Contrariwise, running a community-hosted wiki might not be better :
Hosting and budget : Hosting a complex website (such as a wiki) requires to rent a web server. The price changes according to the storage/upload speed/power : from $3.60 to $46 per month at OVH-Cloud. In the worst case, I don't think that the community can gather $560 of donations each year forever, and it is juridically sensitive for the server owner (due to copyrighted content). And by relying on a single server, if it went to burn (winks winks OVH datacenters at Strasbourg a month ago), the whole wiki would be down for at least a week.
Time of development, ugly wiki : deploying Wikimedia and customize it as beautiful and user-friendly as fandom requires a lot of time. A single IT 1st grade student can't make a better work than 40 paid workers from Fandom.
Finally, do you think if self-hosting is a good idea ? Do you have any argument in favor or against this project ?