Congrats on your new Roo! We love our 23ikss. I've been looking at that area myself, the linen cabinet could be reenforced to hang a TV on. The shelf is also big enough to just put a TV on it's own stand. I don't think there would be too much concern about it moving too much during travel, the bunk end would pretty much keep it in place. We also haven't figured out what to do with the overhead shelf in that area either, seems like a good place to keep spare pillows blankets etc.
Let us know what you do.