For a look at a beautiful online long essay form journal, check out The Pedestrian, out of Philadelphia.
http://www.thepedestrian.org/about-pedestrian

It is gorgeous, and looks stunning on an iPad. It offers a pleasurable visual, and intellectual experience. Soon it should be possible for journals to publish editions and sell them as -ebooks, to be read in an e-reader, maybe even in updatable form. Meanjin should be a trailblazer, instead of a reluctant follower.

To bring Meanjin online and still have the aesthetics which readers are thought to desire, this is a great model.