First thing I would do is sit in your TV chair and measure from the floor to your eyes. For more comfortable viewing, you may want the bottom of the screen about the same height as your eyes. im building it for my father in law and he gave me the height and width that he wants it at. Its actually shorter than it apears on the sketch up. Also, just to let you know, the 2 doors on the side are for speakers (that is what the mesh is supposed to be on the sketch up.
In the sketch, you show the rails running over the stiles, normally the rails go between the stiles. Didnt know that, thanks
All the grain is shown running horizontal, should be running with the length of the pieces. knew this, just a bad sketch up
You have a wide apron under the top and under the center opening, then you show a fairly wide door rail, looks a bit clunky. Whether you use a faceframe or not, I'd go around 1 1/4" wide on the door frame. Faceframe or not, I'd go narrower to eliminate so much wood between the doors. On my plans, everything was 2 inches (doors and frames). The frame is alredy made and pocket screwed together but I can go back and reduce it to 1 1/4. Or I could make the doors 1 1/4 and leave the frame at 2". what do you think??
Also the opening for the side doors is only 8 inches (with the 2 inch frame). Im wondering if this would look silly being so narrow...
I think I'd do something to break up the piece a little, like a larger base, one that was mitered around the cabinet, rather than flush. Im actually putting round furniture type legs on the bottom.
Shadows often help the presence of a piece. I'm not so sure I'd use inset doors. I might even set the center section back a bit so the front isn't so flat looking. will keep this in mind
I just think you could look at the design with a more critical eye, you can do better. It's not easy to get a feel for the piece with a sketch up drawing, particularly with weird grain and lines extending. You may want a flat look or disagree with what I've said but their seems to be a lack of balance and symmetry to my eye. Work on it a little harder, don't settle for easy and ordinary.