I did a little test with something i found on the web using bayesian averaging:
WR = (v/v+m)*R + (m/v+m)*C
WR = weighted average
v = number of votes
m = minimum number of votes required
R = average for this production
C = average of all productions (who have at least minimum number of votes)
You can see the result here
. It's still the same chart but the weighted average is mentioned at the right side of the normal average (which still determines the chart position).
The problem with such a system is that C is a variable which depends on the votes. So whenever a vote is added or changed, each and every weighted average has to be recalculated.
It was a fast hack so i hope i didn't mess up. In any case, it was just of curiosity and not meant as a permanent thingie.