Your not really missing out on much. Just much easier to set up for remote access for people, and alerts are easier as well. Just put in your email or cell # for SMS and it will do the alerts automatically. You dont have to go through all those hoops anymore with forwarding, etc. Also, there are user authorizations as well, for viewers, control, program, manage and owner. That way each category has certain restrictions when accessing the account. Nice way to set up a viewer account for a friend of yours when you go on vacation to have a second set of eyes on the tank.
And the graphics are a little easier on the eyes as well.