You definitely have the KOTOR horror story feel going on.
I really like it, especially the Residential Level in the Mining Facility, with the endless knocking on the door. When Solomon says, "Arise. Become greater beings." I expected all the corpses on the floor to get up and attack me. It's rare when I actually get nervous from a game. You definitely used the effective technique of using silence rather than scary music.
The Elevator System in the complex is also well done.
I liked fighting the Sith Chastiser, as well as the concept in general. My PC and Shadow actually got killed, but fortunately I had HK-47 and he succeeded where two Force-users could not.
The skins for the levels are especially well done. You seem to have expertise in everything modding related.
Backwater Entertainment was amusing. Since I try to avoid DS points in order keep my LS master (and also since I can easily cast Dark Side powers with little drain on my FP), I actually avoided tripping the Cathar Slave. You seem to like the theme that the Dark Side is a quicker road to a place that the Light Side will take you to anyway, given the minor task on the Orion with the droid parts.
The feel I'm getting from you regarding the Brotherhood of Shadow itself is that you redesigned them not to be a collective of spirits who united together in a Rakata mind trap, but a collective of spirits so evil and horrifying that they make the Sith look like teddy bears. It's an interesting revision, but it did take away some of the interesting philosophical questions present in the 1.07 release of BOS. Still, it is a pretty scary feel.
The VOs are very well done, with the exception of one of the miscellaneous Czerka employees that sounded distorted. Not sure how much I liked Telena's Voice Actress but I'll wait until hearing more of her before making my final judgment. Kobayashi is awesome, in fact one of my fellow members of Team Hssiss wanted me to ask you for some contact info. We'd like to have him do VOs in one of our mods.
In conclusion, I really like, no...LOVE what I'm playing.
I'm at the mining tunnels. I'll post more as I progress.