User blog comment:Rupert Giles/Global Navigation Update/@comment-89.69.129.64-20141204213400/@comment-1038387-20141204215950

That's not what they're testing. They're testing how people use the new one(s).

Also, Wikia has thousands and thousands of registered accounts, many of whom are lurkers and/or infrequent editors. The unhappy ones here are less than a percent. So the results would probably not end in favor of changing.