Although Republic Knights isn't bad, as has been mentioned, DS already has a history. I myself hate looking up stuff for older games *coughlikeTSLcough* and finding old pages referencing some site that no longer exists with some must-have download/info. And with a name change, that's exactly what would happen here, correct? How many references to DS are out there where people might come across and not know where to turn if the name were to be changed?
Plus, a thought on RK.... wouldn't that kind of limit things to KotOR after all? I mean, let's say one day my dreams come true and a new TIE Fighter game comes out and is worth something. It's not Republican or Jedi, so would RK fit as a name?