I`ve often thought of incorporating visuals into my music purely because I am an artist (for want of a better word)
I have a degree in animation and still keenly pursue my visual artistry, however, you can`t do a good job of the music, if you are trying to do visuals as well. It`s simply too much, and the quality of one performance will be reduced to compensate for the other
Jack of all trades, master of none etc.

That`s why we have VJ`s

If there was some interactive plugin like you get on winamp that could sync to ableton, say, then that would be gravey.