User blog comment:Rupert Giles/Introducing Updated Global Navigation/@comment-25027816-20141004180602/@comment-452-20141005162525

I think that this is a really good suggestion.

Since logged in users can use CSS to remove it anyway, I don't see the harm in adding it a show/hide toggle.

However, for branding purposes, Wikia want to make sure you see the Wikia logo as often as possible, so it's unlikely that this will happen.

Additionally, Wikia Staff already do not allow a right-rail toggle, so wikis will not be able to add a toggle themselves.