Voice and skin colour changeable would be nice, since those in creation screen do not always represent those ingame (e.g. you can make "wrong choices" with best intend here).
For roleplaying and variety, there should be more skin tones available anyway (e.g. make those all available independant of "race"). This would also give a huge variety in facial expression/class/skin combinations. All without meddling with models, classes or races.