Houzz is the new way to design your home.
TV and cabinet depths
stone, mantle, simple shelving
TV placement, uneven shelves
stone, TV placement
low profile, DR light
Taller middle shelf, TV nook
Stucco? Open shelves
paneling behind, marble hearth
Dark shelving against light back and sides
Could you raise the bottom of the firebox to get a raised hearth?
mantle extends into room with vertical sides - floating shelves with gap between sides of mantle. extended mantle makes help hide shelves from overextending into room.
wider fireplace and mantle, narrower shelving. also dark shelves on light sides and back hide the protruding unit.
spend time and money on the wall, simple mantle with smaller, but matching floating shelves on either side.