The best features are the ones that you use all the time. SQL Server 2016 Management Studio’s bringing improvements in navigating around execution plans.
Click + Mouse Scroll: Zooming!
You can now make your plans bigger and smaller with this combo. It will zoom into the region where you have the mouse.
Click + Drag lets you move the plan
This is really handy for moving right to left.
As you can see from the GIF, I’m at Toonces the Driving Cat levels of expertise now, but with a little practice I expect to be navigating better in no time.