Your new calendar does not allow users to manually change repetition dates. Now you can only choose ever day, every week, every month, or every year. I have items that occurring every two weeks I'd like to add to my calendar (or somethings every three weeks) but you offer no way to do that.
My suggestion is if you're trying to improve something... you add better functions, not take functions away from the old version. Seems like you're going backwards
Thank you for your feedback! The deployment for more flexible options for recurring events in the Outlook.com beta is now complete. If you refresh, you should be able to see the experience.