Well, I unfortunaltly cant tell you if Evil is so fun or cool or anything, I just have a question; did u play Evil before?? Or do u think you can roleplay it well enough??
I have tried it before, and I just plainly sucked at it (that and Im always an Archer

)...I cant seem to stay in the role of being evil for very long, simply because I dont like the game then..........maybe you would feel the same way??
I agree with the evil NPC's, that they can be fun and that they are very powerfull, but why dont you take 2 on ure way with a good character, so the "evilness" in your party isnt that present....
Further more I wanna point out that Viconia isnt that much of an evil character at a certain point, neither do I think Saravok is. Korgan and Edwin however, are 2 NPC's I cant judge very well about, since I never took them with me to long (a bitsy to evil for my playing style from what I experienced in the small time I did take them along....)
Hope this somehow helped....
Edit: Put the word:spoilers in you thread title by the way....else fable might get mad
+ u could ruin other peoples playing fun.....Ohh, and welcome to the Forum by the way