I think the matrix and particles are great, but i'd really like to see extensive geometric transformations, random image cropping, multi line, multi square, mixtures of grid sizing, etc etc.. this type of thing synced to bpm gives real potential from even just a small selection of clips.. this could be a plugin i guess.
a good example of this type of thing is this free Mac VJ app called CoGe
http://www.softwarevj.com/softwareoverv ... ?Name=CoGe