As so far now there has no new plan to add a new professional to the Mists of Pandaria, but there are several equipment Transmogrification system changes worth noting: Gladiator suits which have disappeared will return, so do some disappeared iconic items, such as praying. More importantly, despite the long-range weapons has been canceled - but still like the quiver and sacred will continue be remained because of its visual effect. I can imagine at then maybe players will need to buy wow gold online for these great items.
Exclusive camp is very interesting and epic, but it is really quite difficult to do it in the MoP.
Tanks have no legend equipment for a long time - an orange shield is a good idea.
Wrath of the Dragon, Tai Lei Gou Sa's send the soul of the rod is a very good epic weapon, with the same epic task line. In the future there may be camouflage weapons like the flames sickle - but the use rate will be very small.
There would be a cool quiver and other works of art to the hunter.