I learned something new....

MeshReigons are new objects in Mathematica 10. E.g., from your example, the Head of DiscretizeRegion

 DiscretizeRegion[area] // Head

is

MeshRegion 

So it is not a Graphics though its OutputForm is to display it graphically, which makes good sense. To get the graphics primitives from a MeshReigon in order to use them in a Graphics directly you can use MeshPrimitives to extract them from the MeshReigon itself as in

Graphics[{stuff, EdgeForm[{Thick, Green}], 
  MeshPrimitives[DiscretizeRegion[area], 1], FaceForm[LightPurple], 
  MeshPrimitives[DiscretizeRegion[area], 2]}]