User blog comment:Rupert Giles/Introducing Updated Global Navigation/@comment-5645428-20141023130257/@comment-5645428-20141027092130

The fact it says "Search this wikia" with a chevron indicating it can be toggled (to "all of Wikia"!) states clearly you can search all of Wikia. Considering Wikia wikis would be the only wikis with a fixed header bar would naturally attract attention to it and those who can read would find the option to toggle the search range. Building on that, I would suggest making it a toggle button rather than a tacky dropdown bar.

I know making the bar white is one of those "company rules, deal with it" kind of things, so there isn't much more I can say from the points I have already made. However, the actual design with that dreadful unoutlined grey search bar, its input font, and the circular profile pic needs to be reconsidered. If that is branding, it could really do with some elegant refining.