User blog comment:Rupert Giles/Introducing Updated Global Navigation/@comment-24513088-20141102073550

"In this case we made an explicit design choice to use Wikia branding in the header instead of the individual community. The reason being that in early 2015 we plan to roll out a true global site search."

How about have it so that the colour of the global navigation matches the wiki when "Search this wiki" is selected then have it turn white when "Search all of Wikia" is selected in the search box? Also you might want to have an option in account settings so that the user can choose to "Search this wiki" or "Search all of Wikia" by default?

Also, with the "Size of the navigation", I think you should have it that "Hide the nav as the user scrolls away" and "Hide the nav as the user scrolls away and bring it back when they start to scroll up" by default which is my preference and of course also don't forget to have "A user-based preference that will define the nav behavior" because it should be good to give users choices, am I right?