I would like to see a greatsword wielding class with a focus on mobility and possibly projectile weaponskills a' la' Cloud. The job based on this class could be "Soldier". The idea is like a Soldier class from Ff7 . Maybe have some elemental weaposkills that give weapon an added effect for a couple of swings.

I would also like to see mobility abilities in general. Like dragoon getting a jump so that they appear behind the target, or far away from danger.
Soldier could have a dodge abiltity that dashes or rolls the character to the side of the target when it activates. This way you could have more activity going on in the fight and have abilities that position you correctly for weaponskills,and could act like "openers" for a string of weaponskills or combo or w/e.