This is a really awesome idea!! When I taught high school English, I used to have kids start by writing a sentence or title then pass their paper to the person behind them, and continue to do so until their original was back on their desk. The collaboration was amazing and so much fun. That's what your idea reminds me of!! Love it!

I'm also going to drop this link in @newbieresteemday's contest channel to hopefully grab more writers to join in on the fun.

Cheers!