The best thing about dynacal was that it had all of my contacts in one place which saves me time when sending emails or calling people at work for meetings etc... It would be nice if there were more features such as being able to do tasks directly from appointments instead having them send out an email with details and then I have no idea what's going on until after they've done so - this could really help improve productivity especially over things like google hangouts where we can't see each other but are just talking via audio through our computers anyway.