Shift doesn't scale uniformly for me, in the build released 2 days ago.
Same with me, which honestly makes Labels a pain to scale, because if they're pivoted to anything but the middle-center, there's no way to uniformly scale them, instead it uses the widget handles to scale it one direction or another.
Overall I think the new handle gizmos are great for sliced sprites and the like, a lot faster than scaling and repositioning, so I love that, but not so great for labels or sprites that need to specific dimensions. Sometimes the green 'scale' handles on the sides get in the way of the default Unity axis handles, which can be a little frustrating, when you're trying to move something along just one axis for example, and it scales it instead. That's happened to me a lot so far.
I never use RMB to rotate the camera, so I have no complaint on that end. And the above suggested fix worked to solve my RMB+Zoom issue, which was the big one for me.
I wonder if it's possible to only have the new green selection gizmo show up when you have the pan tool (Q shortcut) selected? You never interact with objects normally with that selected, so it wouldn't get in the way of any of the default unity behavior, and would fix the problems I've had with it, and from the sounds it some other people's as well.
