The notification system is beyond helpful. Prevents myself, one of the most unorganised humans digitally, from forgetting that I have an activity with friends. But it'd be great to customise what the email notifications send. Just having a simple message that says "A new comment was made" or "A new move was made by..." It sounds trivial but if the email is a shared one it allows for some enjoyable anonymity from those who might want to keep content private.