The sheer size of SWTOR at launch dwarfs some other past MMORPG launches and Lead Writer Daniel Erickson gives a good indication of just how huge the project really is in terms of just story alone.
"To give you an idea of how big these stories are, Chapter I of the bounty hunter is longer than the entire old Knights of the Old Republic," says Erickson. "And then there's Chapters II and III. If, after that, you go and re-roll on, say, the Republic side, you won't see a single piece of repeated content, not one line of voiceover, nothing."
The current three chapters will be expanded in the future and one way that BioWare plans to keep providing quality content to SWTOR is by not radically downsizing its team as many other developers often do following the launch of an MMORPG according to Creative Director James Ohlen.
"Unlike a lot of other game companies that, once they launch a game, downsize their teams radically, our plan is to keep the team together and continue to focus on building content."
For now, the team remains focused on creating content to expand the SWTOR universe.
Source: Gamasutra Interview