You may welcome this and may argue all you'd like, but a rdm is not a tank. A rdm is not suited, intended, or able to tank in most events/situations that players are dealing with today. Abyssea, or 'when able' may be a great place for a Rdm to tank, but VW, Legion, NN, ADL, and such will leave that tanking rdm face down in the dirt. Situation uses for a system that is a key role in the game does not cut it. It is do or don't at the end of the day for something that large scale. Saying that is like me saying I tank with my Drg when able.