When I stumbled into getting to name a challenge a short while back I was on same wave length some are suggesting now.  I chose "skys" to get noses into sky lab.  I think there were over 50 entries in that one.  

(Willie changes subject) What do you all think about the winner of "bryce feature" challenge must submit the scene file as freebe for all to grow there skills,or at least explain/tut on its making?

Problem I see with challenge requiring DTE manipulation would scare away novice and hobby users entering.  Anything I get out of DTE lab is purely by accident.  To go into the DTE with a specific result in mind is foreign to me.  I am now only getting a handle on material lab.