I've been thinking of trying to get one started (not knowing this one existed), so maybe we can try to start something up. But maybe something with a master PSD file that has layers to keep all the characters in order. That way, a page could be expanded or contracted with more ease, and one could resize the PNG from the master rather than having to worry about someone possibly screwing up the resolution and then having to find a way to hastily fix it. There could also be that each person sends an image of their character and a specific user puts them all together, so turns don't have to be taken and the like. Stuff to discuss, at least.