If the Development Team sets conditions such that "You may only enter the Garuda battle if your party has a Tank and a Healer", then there is the possible issue that other roles that wants to experience the content need to wait for a Tank and a Healer to become available. That's why the earlier graphic was concerning to me. I see the potential for the queue being used as a party role enforcement tool. I've never used a queue-type system so I don't know what's standard in regards to them. But from the horror stories my friends tell me playing World Of Warcraft, they've waited hours for the prerequisite role to show up.