Add additional options to 'Starring' and 'Streaming' sections
For 'Starring' - if the issue is verification, maybe have the other parties confirm before they are published as part of the event, and additionally allow them to control being able to remove themselves from a particular event if situations change. And an option, similar to who can whisper you, could be an option of who can send you a request to be added to an event (in case it gets spammed).
For 'Streaming' - purely because some events include multiple games (ie. 24 hour stream, etc.), but you are only able to select one. Additionally, the option to reorder the games you select would be helpful (to align with the order you intend to play on stream).