talking with other teacher here at UFSC, we've found that the option on "Course administration" to enable/disable the usage of mod chooser is actualy a user preference ("usemodchooser") that affects the behaviour of all courses the user can edit.
This is somewhat misleading so i think we should:
a) move this option from course settings block to user profile page, or
b) keep it there and make this option relative to each course
What do you think about it?