I'm not sure I follow your idea artcayer.
But basically, I would settle just for a really simple implementation of this, ie. the ability to edit a collection, and give it:
- a title
- a main pic
- a background pic
- text
The presence of 1 or more of these values would trigger the "special layout" in any clients capable of showing it (i.e. the example pic at top of this thread)
Any automatic downloading of metadata for certain collections (e.g. movie trilogies) could come later.
