Alright, I'm open to more variety of buffing classes, yes. But out of the 7 war/magic classes we already have, why do we not have a buffing class already? This should've been in since conceptual design, long before alpha even.
And also, that's just a terrible breakdown of needs for a party in FFXI. It obviously wasn't thought out very good. Minimum tank/healer is enough to get a party going, and what classes would be acceptable depended heavily on level. Don't just make up nonsense to support your argument if you're going to make one.