Not so sure I would agree with "hidden" statistics. Maybe not at your fingertips - sure. But you should be able to find the info somewhere in the game with a click or something.
I would prefer the more important stats instantly available (in tool-tips). Secondary type stats in places like item description found in the Build Menu. And then ALL stats found for all items in a chart so you can see everything all at one time to make side-by-side comparisons. Obviously, this chart would have to be brought up by some sort of other option from someplace else.