Board Thread:New Features/@comment-25867502-20160121202137/@comment-26437440-20160121203714

Sadly once you factor in the wiki rail, the space on each side of the actual content area, and then ads, there just isn't a lot of actual content space, and given it was changed to that I doubt Wikia will consider this (though it would be nice)

For now, using Monobook as your skin is the best way to have as much content space as possible, or using personal CSS to make the space wider and the rails smaller