A TV is really just an output device for me, may as well be a large monitor, doesn't need network or speakers or multiple inputs
...
I have an AV amp and all my stuff goes into that and it all gets piped out through the HDMI and the surround speakers, I can flick the input to the HTPC and watch DVDs, Blurays, streamed or downloaded TV, movies or music via XBMC, as well as photos, Facebook, play some internet games, play some real games, hell even post on Tom's forums like right now, all with a wireless mini-keyboard with a trackball built in or the all-in-one remote, hell if I get REALLY bored I can flick the input to cable TV and watch that too
...
The only thing I need from my next TV is more resolution, colour gamut, smaller bezel because unless you can integrate Windows and XBMC into an actual TV I really don't need a "smart" TV