Might sound shallow and insignificant, but in addition to the previously mentioned reasons, the look on visitors faces when they walk in and I pickup my gyration remote and bring up the floor plan on UI2 alpha blending while watching live tv....priceless....
Agreed. The overlay is pretty awesome and that's where LMCE as an integrating option is fantastic. It also means that even the least smart TV can be "smart" because the media-director provides the smarts... and it provides consistent smarts across any brand of TV / display.
I personally love the concept of a media director - it is very scalable - can be very small and low power (Rpi) or heavy duty for doing bigger work if that is your requirement.
My only gripe, and Andrew hinted at it earlier, is the video/ hardware support issue - but I'm going to post about that in a separate thread as I have some thoughts on how we as a community might be able to address that.