The Internet ends at GF
18th June 2003
1. Rat on Zelka: When you find the Republic soldiers that the upper city doctor is hiding, why not after you talk to him about it, you can talk to a Sith soldier and have Zelka arrested. Afterwords you'll find him at the Sith base in one of the remaining prision chambers, and you have option to either rescue him or kill him.
2. The Second City: Possibly via the sewers (one of the 'blocked' ladders) you can access a clone of the under, lower and upper cities which offers new shops, the "promised land", Bastila's hiding place (screw the race), Davik's Estate, new side quests, and an alternative Sith base with the serum and launch codes.