Shadows of Luclin

[busted]

Add each plane from PoP and make the planar entrance match up with a spot in the world.

Innovation in Steamfont
Fire in Lavastorm
Tranquility in the middle of Erud's Crossing
Disease in RnF channel
You get the idea

This is a great idea to introduce custom content. Imagine clicking on the top of the windmill in steamfont to zone into plane of innovation.

Here's a bonus to make it super interesting... Add these zone-ins but do not announce where they are. It would reintroduce that feeling of exploring an unknown world without an all-encompassing wiki.