But the Gridcosm description doesn't say what the granularity of the collaboration is.... It's left to the participants to decide how many continguous panels are enough (unless it's further defined (more rules added)).

I've never sat down thinking 'OK, I'll do 2 full levels in a row.' I have thought 'hmmm, I might as well finish those last two panels on this level before someone decides to protest in them and make the whole thing look like crap.' That's what I find to be the lamest noncollaborative thing that can be done (unless it's just someone that doesn't know any better putting their paw print on the gridcosm).

But anyways, Darlink, when I start back up I plan on staying away from making full levels on my own. In the meantime it's fun to watch y'all quilt.

L,Mikey