Chemist will be the next healer and it will not be a caster, finally. I revel at the thought of a skill based healer. If you look at what comes next in 4.x, you must be aware that it goes into garlean territory and they are prone to casting magic.

So there will be chemist (healer), red (rune) mage for dps, both from technology of the garleans - and samurai as tank from the resistance.