The title sums it up. In the mean time how about an unofficial modeler challenge to get people in the mood, a concept art challenge or even a texture challenge (Make a set of say 8 tiling textures and put them in a basic environment)
In fact I think a concept art challenge warrants further discussion.
What do you think?
I've checked it out in another browser where I'm logged in and I can see your thread fine.
If you want to to attach your thread to the challenge group, go to edit, select the modeller challenge option under 'groups', and make sure you have the 'public' box ticked.