Quote Originally Posted by silentwindfr View Post
the add of a class, raise of level, add of an area are something you plan more of 1 years before, it's a lot of work. for a class you have to create design for the item, create skill, animation, AF, relic, quest line, balance,... it's a looooot of work, more than any add of content.
Musketeer like arcanist was planned back in 1.0. So they probably have much of the this already worked out. I would say balancing the class is probably the big thing.