How about a method to refresh the SketchUp display when executing long scripts? Today the interface looks like it is frozen when you change focus to another window and then back to SketchUp. The display gets refreshed only when the script completes or a dialog box that requires user input is displayed.

Extend the UI class to support the selection of a directory. Currently you can select files, but there doesn't seem to be a way to select a directory or folder.