I have been using this plugin for about six months and love it! Easy to use and site visitors like it. However, I do have a few suggestions:
1. A comma is forced after the state - should be after the city.
2. Include zipcode (postcode)
3. Include option to set an event with no end date (i.e. 'Indef')
4. Expand repeat options to include variable date (every second Thursday of the month)
These are minor and do not detract from the quality and ease of use, but would be welcomed enhancements.