I think the OP greatly overstates the 'uniqueness' possible with XIV's class/job/whatever system: even now there are a very few cookie-cutters specs that are generally 'accepted' by the elitists, already the game is dictated by the mix/maxers who are beginning to tell people what gear is 'needed' to do X, Y or Z.

There is little 'creativity' allowed in MMOs at all.