Wow, I love KOTOR2 but the intro is what I consider one of the biggest flaws of the game. It is cool that you like it though, I always thought it was too tedious and uneventful to draw players in and capture their attention. I have a number of friends who have given up on KOTOR2 because they couldn't bring themselves to finish the intro area. In comparison to KOTOR1 which the Endar Spire does a phenomenal job of being brief and interesting enough to grab the player's attention.
Anyway, not to be critical of your personal opinion, it is just the first time I've ever heard someone praise the intro of KOTOR2 and my mind is kinda boggled. 
Personally, I love levels that are "deserted creepy environment with weird goings-on, figure out what happened here"; places like Charwood Village in Neverwinter Nights, the MSV Worthington, the monastery on Lesuss, etc. I thought Peragus did a good job of crafting the mystery, then ratcheting up the stakes: finding out who's alive and why everyone else is dead, the truth about what the miners planned to do with you, then the arrival and exploration of the Harbinger (sheesh, talk about spooky--the Harbinger is a creepshow).
For me, the slow burn of Peragus added tension and gave me time to get to know the characters, not to mention figure out the situation galactically after the end of KOTOR. There was a sense of dread about everything that I found very compelling, and that carried me through a lot of the first act of KOTOR 2.
An opening like that wouldn't work for every story. But for KOTOR 2, which is about figuring out your place in the galaxy again, realising not everything is as you imagined--even the Force itself--and discovering that people are rarely who they appear to be? Worked for me, anyway. 