I was thinking about making a simple cms system for designing custom fan pages based on some simple modules, e.g. a

the basic is a center pane where some modules can be placed and a sidebar for some other small custom modules

a module for  3 images that links to 'something'
a module for embedding a playlist
a banner module with some text
a module for one single song
a sidebar module for comments
a sidebar module for selection of pages

more can follow