This is something I though about myself and me having audio editing and sound designing skills realy helped to produce a reasonable cost free solution to have this enabled.

swtor's sound team can assign pitch slider modulation to the voices as slider presets (kinda like you select eye color and hairstyle) The pitch modulation would make your voice more husky or lighter. This is actualy very helpful when building a character that is either body type 1 or 3-4. It enables you to give them a matching voice for thier build.

here's an example https://soundcloud.com/deshiel/swtor...arison/s-AMNE2