Thread:NeonSpotlight/@comment-3974211-20140330214645/@comment-3308937-20140409205138

Closest thing I could find was:

"Yes, Comments can be enabled for specific namespaces by Wikia staff. Please write in to Special:Contact with the details of your request. It's good to have community consensus about this type of change, of course. --BertH @Wikia (help forum | blog) 18:19, February 25, 2013 (UTC)"

I don't think you can do it for specific pages in a namespace though but it'd probably be best to ask wikia about it directly.