It has always concerned me that all the Wikimedia wikis look the same. The main concern here is the majority of wiki's based on MediaWiki thus look associated. I remember 5 years ago I used to think that WikiTravel was a Wikimedia project because the branding was so similar.
I can imagine MediaWiki.org using the default skin would be of value for attracting new users by making this distinction but has there ever been talk about configuring a different skin (even slightly different - say something as simple as colour scheme) for Wikimedia projects?
Personally I'd love to see every project have it's own skin and own way of expressing itself. Am I alone here in this desire?