Hotkeys for toggling Service Pane, Content Panel, Sidebar

The Service Pane, Content Panel, and Righthand Sidebar should have hotkeys (Ctrl + P, C, S or something, or especially customizable) to be easily opened and closed. The service pane is open by default in the Media View and closed in web browsing, and I'd like to be able to have that as default for my right sidebar. It would also be good to have the open/closed when in media view/web be an option and not a set default.

The built-in buttons for displaying these panes are excellent, but the use of keyboard shortcuts should be an option.