You're now trying to derail the thread. Go make a thread about hybrids and I'll gladly debate the issue with you. In the general forums. Not here.

Again, you seem to be utterly incapable of understanding that you can have a job/class with more than one role depending on how it is set up. The line separating a tank MRD from a DPS MRD could be as simple as job traits, job abilities and gear, while still keeping both acceptable in party content.