Darth Hater reports that Warzones will be just one of the types of PvP arenas in the TOR. Warzones feature set teams with specific objectives. In the case of Alderaan's Warzone, it involves taking over turrets and blasting the enemy's drop ship to pieces -- once this happens, the match is over and tokens and XP is awarded. This Warzone was shown to be 8v8, although BioWare did not mention if the Warzones scaled in group size. BioWare also hinted about another Warzone that takes place on a derelict spaceship.
Turning to crafting, BioWare is implementing something called the Crew Skill system. Players will send their crew on assignments to accomplish various objectives, including gathering (Bio Analysis, Slicing), crafting (Artifice, Biochem) and missions (Diplomacy, Treasure Hunter). Companions are typically suited to do one of these tasks better than the others. These tasks can be queued up in advance, and will have different benefits -- for example, Diplomacy can spread a player's influence and impact morality points, while Treasure Hunting will turn up treasures (and, presumably, junk) based on a random number generator.