dmagerl:
I use Homeseer with X10 & z-wave. I've never seen much need to integrate it with MCE. Using the TV to turn on the lights just seemed too complex and unecessary.
I agree, using the MCE interface as your primary source for controlling devices isn't necessary however since all of the protocols(zwave,insteon,x10,etc) have issues, its nice to verify something is on or off with out having to leave the couch when something odd happens. While I dont use the Mediacenter interface alot, when I do, I'm happy that its there.
Mcontrol's editor does need some revamping, but for the money its a tough product to beat.