the trouble with addind jobs is not that it's heavy, it's they don't test them enough... we can see it with the change on the ninja or the 3 new jobs. the trouble is they don't have a public test server for this... they test this in intern in japan where the connection is not a trouble.
worst, the japanese culture is different on many point, where japanese player will find normal and ok to have some content (like hunt) us people of the rest of world will often receive it badly.

Yoshida and it team need to learn from all this past years... they need to stop to simply develop with japanese people in mind and add people from the rest of the world to the team.... more important they need to add a public test server for the world! not japanese only for allows us to test gameplay and say if it's bad! right now they spend countless hours try to fix trouble it was easy to spot with a public test server!

anyway, i digress.... i see the red mage or the dancer as next jobs.