As a thought, it might be an idea to have more than one feature tour - perhaps one for teachers, and one showing the student view. Our institution is heavily focused on student perspective and this is an increasingly important area to highlight.
It may also be worth highlighting some of the administrative features and the plug ability of Moodle - a lot of institutions want to be able to easily create and manage their users and courses. Highlighting these would be beneficial.
If you're after a case study, we (Lancaster University) can probably help supply one. Our enrolment is performed by a custom plugin similar to the database enrolment plugin which creates users, cohorts, course categories, courses, groups, and groupings. We've also written numerous plugins to integrate with Lancaster-specific systems, as well as with various vendor provided plugins.