While Open Contacts is an advanced address book program, we don't want too many feature flooding the GUI and confusing you. Obviously not all users need all features, we tried out best to keep balance.
If you check Chronicles of Open Contacts, you will find the GUI remain very much the same from early versions, and has even become simpler. Most of the new features are optional. It is these options that make the use of Open Contacts enjoyable to a diverse range of people.