I hate to say it, but I really hope we don't get Dancer as a job. The main reason for this, is because I love the Dances we have in the game, in general. XD I feel like this game unlike FFXI doesn't really have as much a place for Dancer with all that we can (already) dance around in. But that might be my personal bias.

Samurai is definitely a job I want to see added. It fits with the Doman theme that Ninja introduced and can help give us extra Lore (awesome!)
Beast Master or Red Mage would be one of the Ala Mihgo jobs I'd want. Beast Master as a sort of post-war job (Wherein it was a way to survive, moreso than a way of life. I'd prefer something more primal than what FFXI had the BST as originally.)