It might astound you to realize just how many different type of artists work on MMOs such as SWTOR. Dobson said the team has "concept artists, character artists, environment artists, VFX artists, GUI artists, animators, and technical artists. The world design team is worth a mention here as well, because they participate a lot in the initial visual development of an area." And that doesn't include the separate teams that did the cinematic cutscenes or pre-rendered cinematics!
Dobson said that the biggest challenge for the art team was the scale of the project. "The Old Republic has too many assets to even really take stock of how much there is. It is a lot of work to simply track this many assets as they go through the creation pipeline," he said.