A genuine question for you guys that assign significance to volume: The volume reported for any bar (regardless of timeframe), do you ever consider where in that bar the majority of volume was distributed? Was it spread evenly at all price levels in the bar, or lumpy, or mostly at the high end or the low end?
You see my point? And before you suggest dropping down a timeframe, or two, or more, to get the finer detail, I'm going to suggest that the logical end point of that is the tick, where volume becomes largely indeterminate.
I'm not saying volume is useless, far from it, but just using plain old volume per bar is just that. If you don't have a price:volume structure per bar than you are better off without it altogether.