Board Thread:Support Requests - Getting Technical/@comment-3032314-20150114221352/@comment-452-20150115022330

In general Wikia do accept namespace permission changes, if you have a good reason. So perhaps you could have a custom group with admin rights in only one custom namespace... which gives me an idea for something I'm going to request, thanks for the inspiration!
 * For instance, by default, only admins have the right to edit the User_talk namespace on wikis which have Message Wall enabled, but I recently requested that all users be given that right.
 * It's also possible to disallow anons the right to create articles in the main namespace - but to still edit, and to create pages in other namespaces.

In addition to making organisation easier, custom namespaces can help with searching, as you can choose which namespace to search.

There used to be the option of not having them appear in the article count, or in the daily special page lists. This is used on some wikis for the purpose of keeping Disambiguation pages separate from content.

Unfortunately, in mid-2014, Wikia decided to no longer allow custom namespaces which do not count towards the article count, but I think that anyone who wants this option to be available should request that they allow it again.