I could be down for a SAM tank in a 3.X release though I feel it's unlikely. It would be good as it'd revitalize lower dungeon queues for a little bit and open up 4.0 to potentially release with 2 dps and a new healer. But that's a lot of dev work for them so I don't think we'll see any new jobs until 4.0.
I also don't think we'll be going to any eastern continent any time soon. 4.0 Will likely deal with us reclaiming Ala Mhigo and perhaps pushing the fight to the Empire up north. It makes little sense from any standpoint for us or the Eorzean alliance to venture all the way to the far East. Not when there's fighting to be had to unite Eorzea still.