When they contacted me about options for adding some features to the site, I recommended a migration of the site to WordPress and the replacement of their hard-coded event calendar with a database-driven WordPress plug-in event calendar. With the addition of the event calendar, they not only had the ability to create recurring events with a single data entry, but can easily maintain a much more flexible, dynamic event-handling system. The new event calendar is much more useful to the congregation than the previous hard-coded system as well.
Above all, the migration to WordPress was just a bit more costly than adding an event calendar system to the existing site, and the end result is a much more easy-to-maintain system than they had before with all the potential of a WordPress site and the search engine optimization benefits of WordPress as well. They’ll save money in the long run by making this migration to WordPress.