Samurai will be really hard to implement. Especially if you are remembering the job from ffxi. In that game samurai was a slow, hard hitting dps. Because of the speed of the battle system in ffxiv paired with the gcd, a slower dps job in this game would feel horrible and have a very simple combo system.

I think that blue mage has more potential as currently we do not have a job that is close range and uses intelligence as a dmg modifier. However the cast time for spells would have to be really short to make the feel of aa close range caster work.