The shelves were much easier to do than standard bookshelves and we like the modern look. All the online materials I saw had them unpainted, but after a few coats of white semi-gloss they look like a million bucks. We used sanded plywood instead of MDF, as the ends are free hanging so we needed the extra strength. The front edge of the wood is covered with a strip of melamine. I'd never thought of an iron as a device used in shelf building, but indeed it is.
Over the fire place is the electrical and cable line. When we order the TV I'll know exactly where to place the outlets in relation to the wall bracket, so for now the locations are notional.
I'd say it looks better than it was before, especially with the ceiling fan gone too.