Mechanics of photography competition: voting etc.

Ah, so they allow voting to continue after the time has finished, and the accepted answer is picked. That sounds ideal for a Q&A thread. (I've not played in Stack Exchange or Quora all that much, so am coming at this fairly uninformed.)

I'm trying to think of what you would want for a 'competition' thread if you were designing it from the ground up (rather than using a Q&A thread).

1. Thread opened with the 'competition' question.
   
2. Deadline for entries and voting set (as part of thread opening)
   
3. Thread opened for entries (replies)
   
4. Once time limit for entries has passed, thread auto closed to new entries, and voting opens automatically.
   
5. Once voting time limit has passed, thread auto locks and re-sorts to show entries in vote order.
   
   

But that would require a whole load more work, and is most likely overkill :)