Well, a lot of the functionality relies on HowardC. He is working on some dual monitor support. As of now, mame allows for monitor selection, so for mame specifically, I could have the FE on the main monitor(17"), and have mame start on the second monitor(t.v.). When mame starts, johnny5 would replace the fe on the 17". Now in the long run, I would like to have the t.v. as the main monitor and have the FE on the secondary monitor. Otherwise, have them flipped so this setup would work with all emulators. Howard's program, the way I understand it, is supposed to allow me the ability to choose what programs use what monitor.
To answer your question, right now, it will have limited capabilities, but in the future I think it will have a bunch of utility.