Date formatting option for profile view--perhaps as an option in the field creation page. EG. so birthdays could be formatted not to show the year, etc.
Anjel newsletter subscription plugin. I'm not yet proficient enough to do this myself, but it would be very useful (EG. two functions here. 1) manage your own subscriptions; 2) allow admin to do targetted email blasts based on other CB fields--for example zip code, city, etc.)