HiDPI support
I would like to suggest that support for HiDPI display modes (also known as Retina) be added to the MediaWiki interface. This would mean that double-sized images would need to be served to devices with HiDPI enabled (this includes e.g. the MacBook Pro with Retina display and the newest iPad, iPhone and iPod touch, and will presumably become more common in the very near future). On this site a method is described where javascript is used to determine the display mode and load hi-res images if appropriate. Perhaps this could also be implemented directly in the php code (creating and serving different pages based on device). Of course, on MediaWiki wikis there are both general interface images (everything from the site logo and background image to the little formatting icons above the edit box) and content images (images called in the article itself); the latter type probably needs to be handled somewhat differently. What do you think?