I can't access refactoring via the keyboard. For instance, when displaying the VA context menu with selection in a class declaration or implementation file and not on a method declaration, none of the refactor items (i.e., Add Member, etc.) are enabled (some are enabled if selection is on a method name). There should also be a command (bindable to a keyboard shortcut) to display a context menu with just refactoring choices.
Limited commands are available when you have a selection.
Note that Alt+A+R will display the refactor menu. If that is insufficient, you should be able to create your own top-level menu with just the refactoring commands giving it a name and menu mnemonic that works for your situation.