You have a cable going from the bottom of the TV straight down to the floor. Secure that cable behind the TV, and have it go down behind your shelving like the rest of the cables.
From there, zip-tie everything else. It will look a lot better tied together. I was forced to do that at our condo due to the location of our TV and speakers (no way to in-wall wire it, otherwise I would have), and this helped hide the wiring some.
You could also fish the wires under the carpet, but I'm not sure if you want to go that far or not.
If you eventually decide to invest the time into doing all in-wall wiring, the wallplates are all fairly cheap and easy to get @ monoprice. I still need to do HDMI plates and a splitter to feed our living room equipment to the master bedroom TV.