Honestly, rather sticking to the whole "This mob is weak against this element" mantra, which I am feeling at this point is a pretty old and worn out concept, I'd like to see them give each element more identity. We're starting to see the makings of that here in the sets we do have, but as they move forward, I'd like to see further expanse on that - and to expand the usefulness of each element independently.

As far as Red Mage, it would have to be built from the ground up differently than the current mages we have, to utilize its Iconic front-line role that was fairly shunned in ARR's MMO predecessor.