We have a mystic martial artist monk in my group and he uses Modular Abilities to great effect. He can do everything from ninja past some Red Cap guards by using Cloak of Shadows and Spider Walk or track some critter by picking up a Supernatural Sense. He can also channel his Ki into his body giving him Inhuman Toughness or punch harder with Inhuman Strength and Claws. He can also pick up any of the stunts he wants instead of going supernatural. All in all it makes him a powerful and versatile character that can hold his own against most baddies.