Players in SWTOR don't like standing still. As Erickson says: "You can craft on the move, run [war zones] from anywhere, and basically never slow down -- except when looking for a group." To put an end to that difficulty, 1.3 will include a LFG interface that players can use to find a pick-up group to run with (except for Hard Mode Operations, which aren't really designed for uncoordinated PUGs). The tool won't work cross-server, but that's because the dev team is looking to move to servers with a much, much higher population cap in the near future.
The patch will add new perks to the legacy system, most of which are aimed at customizing the way players level their alts. With a high enough legacy and enough credits, players could use XP perks to skip side quests altogether, although Erickson points out that that there are perks for Bonus Series quests that may tempt players to visit planets they've previously left alone.
The last bundle of tidings of great joy for the patch is directed at gear. There's a fine balance between freedom of dress and the importance of visual distinction, and SWTOR aims to find it by allowing "social gear" to be worn anywhere. Additionally, "almost every single item in the game" will get customization options thanks to augment slots. Players can use augment slots on gear to add, well, augments, which will allow them to further customize their character and playstyle.