When editing a repeated event, I have the following options:

• Update this event only
• Update all events

I'd love to have the option "Update this and future events", so that eg. events in the past don't have a wrong time when I want to edit it for future events.
An additional problem I have is, that eg. updating the number of occurrences resets every deviation of a series of events back to its default. One use case I often have is, that I set an event to repeat indefinitely because I don't know how long this series will have to last yet. From time to time, single events in this series get postponed, etc. and on day X I know that I only need 5 more occurrences. If I now set the end date all my previous edits to single events will be lost. So having the option to only update events in a series that haven't been edited before is very important to how I use my calendar.