Comment 3 for bug 1052152

You can also make Marlin/Files open on every boot showing a specific folder. Same effect, no extra apps needed.

I don't understand what's so special about some content that it should overlay the backdrop at all times. Content belongs to windows just as system-wide controls belong to panels. Dumping stuff on the backdrop is only distracting IMO.

But if you have a use case for that, you're free to implement it in any way you prefer, be it Melange or Plasma.