This is actually more of a request, whether somebody would want such a mod. I did it for myself because to tell the truth I don't like the darkside transitions in tsl or kotor. It takes things to far in to short a period of time. Yes the darkside of the force drains it user, but looking at Palpatine, he was the Dark Lord of the Sith for years without showing any sign of darkside corruption and it just screams darkside so loud that you wonder why npcs should trust you at all. Therefore for me it makes no sense to look like your character is about to fall apart after being exposed to the effect so short a time.
In my mod the only thing you will notice is a change in the eyes during the first transition. I'm quite sure you will love those eyes because, they made a shiver run down my back, when I saw them on Anakin in the EpIII teaser. The second transition is actually the first in the game with really intense darkside eyes. Atton, Disciple, Handmaiden and Mira will have the same changes as well.
On the other hand since I have ds face textures for every playable character and the before mentioned npcs this is going to be quite big (20megs) and that for a rather small change.
Here for some screenshots:
From normal to final transition
http://people.freenet.de/Mech3/fchtrans.jpg)
handmaiden with her final ds looks
http://people.freenet.de/Mech3/hndmdse.jpg)
This mod has been released. Enjoy :)
http://www.pcgamemods.com/mod/10999.html)