Its amazing, heres some of the features that come off the top of my head.

Whenever you invite your slaves to a group, they auto accept.
If you move over to one of your slave windows and move, it automatically makes that char leader, and all the other chars will follow him.
Slaves auto follow the leader.
You don't need macros for all your spells.

Thats all that comes off the top of my head lol