The recurring calendar events functionality could use some user-friendly tweaks.

1) There isn't an easy way to update the times of all recurring events in the future. You have to either update one by one, or just create a whole new one.

Would be great to have a "update this instance" or "update all future instances" options.

2) Hide "past" dates from the UI and make their date/time uneditable. Now the occurrences of recurring events just piles up in the UI, which forces admins to create new recurring events once it becomes unwieldy to load.