When building report templates in the Standalone Report Designer, it would be very helpful to have a keyboard shortcut to access the Property Browser and possibly the other panels (Report Explorer, Data Explorer, Group Explorer).
I have grown accustomed to the shortcuts available in Visual Studio for similar access. For instance, the F4 key will jump to the Visual Studio Properties panel (at least in my configuration) from a designer window. This makes it easy to update things like field name, size, location, and other properties without constantly reaching for the mouse.
Visual Studio uses Control-R to access its Project Explorer (again, in my C#-centric configuration), perhaps similar to the Report Designer's Report Explorer.
Adding these keyboard shortcuts, whether fixed to specific keys or configurable, would speed up report development for keyboard-bound programmers like me.