Poll driven development is not going to cut it 
I think people who need all stats all the time are going to need to run a plugin and in dashboard v3 can just customize all the panels as they see fit. The wall of stats is not going to come back, it really turned people away from the dashboard. And @codinghorror already mentioned that we are keeping old dashboard for the next 12 months transition.
So you need to make a pretty strong argument here with screenshots that “All” is always needed, and which “alls” are always needed.
I am not convinced here that you need regular and constant access to these numbers, you can get to them all with one more click for the next year.