Bowdaar: Just as Chewbacca was sometimes called "Chewie", so is Bowdaar called "Bowie". This is used in-game at a few points, but the nickname is so obvious it was in use before release.
Many people critical of the game have taken to calling it "TORtanic", joking how the game didn't live up to its expected status as a "''WorldOfWarcraft''-killer" despite its huge budget and hype, similar to the disaster that befell the HMS Titanic.
According to Word of God, there were originally going to bethree factions: Republic, Sith Empire, and Underworld. And before that, a developer said that they were going to have Voss Mystics as the third faction, so that's two factions that didn't pan out. They are focusing on creating more content for the iconic Republic and Empire classes, but have left open the idea of adding classes post-release.
Originally, there was going to be possible for players to permanently lose their companions. Due to the complaints from testers who figured it would be a case of Like You Would Really Do It (and assuming that paying players would make the same error in judgement), this feature was removed, as the goal of the game is to "be fun" first and foremost.