Coming back to the matter of the post, new contests...
Do you think there is a need for new contests? Why not use current / future resources to grow the curation contest? It's developing into quite a powerful brand. I in my opinion you run the risk of diluting the efforts we are putting into the curation contest, should you create further distractions. It's quite stretch already trying to keep up with the curation contest. Particularly for people with small accounts. If there are to be additional contests let it be linked directly to the curation contest.