"I contacted the Localization Manager and she told me that as of now we are not going to focus in Czech. As you might noticed, the platform will go to a rebranding process and we can only on making sure that the supported languages are properly localized.But she told me that once the rebranding is over, she will be reviewing the localization process and see if we can extend it to other languages."
Yep, hopefully there will be some progress on that part.
Alternatively, if you have a basic knowledge of PHP, you can take advantage of the fact Wikia is open-source, fork Wikia code on GitHub and submit a pull request with your changes. Someone might look at it and it could get merged, though it's not guaranteed at all since this isn't an official process so people might not have time to look at it :)