Change width of Application Switcher

I would like to change (increase) the width of the Application Switcher. The width is not included in the macro in the Editor, so I realize it can not be changed there. Perhaps changing a setting in a plist somewhere? Or better yet, add it to the items which are configurable by the user.

The Application Switcher is very handy, but it is rather narrow for (today's) larger displays.

As always, thanks much.