For what I keep hearing Red Mage is essentially a "jack of all trade" class. So my question is, why not letting it be the first class/job/whatever to be a multi-role one?

They could tank but due to their lack of buffs they could work like a offtank. We still need a good counterpart of the warrior, which is STILL the best Offtank of the entire game: why not letting RDM be one?

They could dps by using "whatever spells" they will get, but thanks to a specific stance these spells could also get aggro for when they tank or heal the group when they on healing role.

They could heal by using both spells and melee attacks: this could be like also a way to recharge their mana/do dps to the group. More (but weak) dps, more (but weak) heals, more (but weak) mana, (I dunno, anything works as long as it's not another copy of SCH and WHM)

I dunno, the possibilities are there, and while I never played XI I just thought that we could get one job split into 3 roles. But if it's gonna be another dps then I'll probably skip it.