The Mcm Menu allow to customize your succubus by choosing the horns and wings style. 4 Style of animated wings are and 3 statics wings are available.You can choose between 5 styles of horns or decide to not get horns.
If you uncheck the succubus aggression, you will be not attacked anymore when transformed into succubus (activated by default)
Choose the regen health rate when you are transformed in to succubus.
Look at Wings and Horns style to have a preview of appearance.