Another idea, the raw total volumes could be used for a total bid USD/total ask BTC chart, would be interesting to see how that correlates with price.
This what I suggested some time ago for discussion. And I think in this case it would be good to use filtered raw data to have meaningful estimation for the price.
How can we call this parameter - expected market price or general market expected price? or? Is there any existing parameter for this in financial world already?