When setting up a game, include the currently selected difficulty in the list (could be applied to all combo boxes, but difficulty is the only one where the ordering isn't immediately obvious). As it is currently, if 'Employee' is selected, the options displayed in the list are:

Intern

Assistant

Manager

Executive

VP

CEO

Given my employment history, 'Employee' could either be the easiest setting, the second easiest, or the third. I think it'd just make things a bit clearer if the currently selected option was also included in the list when the UI element is triggered.