SWG was largely a sandbox MMO. The players were provided a set of mechanics and turned loose on the galaxy to create their own content.
SWTOR is a hardcore theme park MMO. The players consume content provided by the developers in a fairly linear fashion. The problem with any theme park MMO is that players will always be able to consume content faster than developers can produce it. For this reason and others most developers have moved away from the theme park model. Bioware however has doubled down on the theme park model with their latest expansions to the point that the game hardly resembles a developing online virtual world and more a classic single player rpg.