EDIT: Contest Average: 6.25
EDIT again: Just noticed something on the Wiki... Ever since the Sep/Oct '10 OLDC (which had an average of 4.03), all OLDCs after that have an overall average greater than the preceding OLDC. Does this mean that the next OLDC will have an average of 7? One can never tell...
I have a feeling that this is just like a cycle. Which means, the contest average will most likely lower for the following OLDC. Then again I could be wrong. You never truly know.
EDIT: For the record, if I were to have voted for this contest I would have also given D00D's map a 10/10. :P