Do the video chain and feedback loops.
At least within the audible range 20-20 000 hertze it should be much more linear and accurate. Causing a more accurate video reproduction(Videophile'y sounding Much?)
And for some reason I feel like it would improve greyscale. But I Don't Know!
I really wanna see you try it.
For Science!
Cheers,
Rudy
Edit:
And hey, wild your at it, bump up the vert and horiz scan rates, change the electron gun in the crt to that of a much smaller screen. And bammo presto you have HDTV