Could you provide an equipment list?
I do have some constructive criticism.
First, I would lower the speakers to ear level. This should improve the audio quality greatly.
Second, cosmetically it would look better if the wiring was run through a loom or some type of conduit. Even PVC would work. Just paint it to match the wall color. You can get more expensive looms that have slots along its sides and a solid snap cover for easy access if you are adventurous.
Other than that, it looks very well thought out and a lot less imposing than many of the "entertainment centers" I have seen used. I like clean, simple lines and your layout is right on the money for that.