I'm happy about this, and I really hope they provide a transparent explanation why they suggest each route. I would welcome a list of the primary attributes of each suggested route like "this route has many stoplights", "this highway can be dangerous during twilight", "this route avoids quiet neighborhoods".

One routing algorithm I'm really hoping for:

Instead of navigating to a point, I wish Google Maps would let me draw a circle on the map and navigate to wherever within the circle I can drive to the quickest.

Often, Google will send me on a circuitous route to the destination pin, which takes ten minutes longer than it would to go to the parking lot off the big avenue a couple blocks away.