Hi Chris, you should get in touch with Gerry Storey, he has used DT in a creative manner. He will even hit a matrix with a hammer, or scrub it with a scouring pad!
It might be intesting to submerge a piece of unexposed matrix film at the bottom of a tray of water, disturb the water to form various wave patterns, and expose using an enlarger or flash unit. You could then superimpose several of these and print with different colors.
I sometimes paint on my matrices, but it is generally to color correct, and not an attempt at art.