Hi there,
I came across this link to a group developing a spriting program. It seems like an interesting idea for making spriting easier and faster. The software is in BETA and is a little limited, it also exports to pngs, so a skilled artist might find simply animating each frame actually faster. Nevertheless it's a good concept and might be a good way to go about making sprites using a similar custom-made engine in mmf2. It would certainly save data. here's the link...