That would depend on what you're trying to do, musically. Right now, you have a fairly 'general purpose' module set. Before going nuts with the Magic Plastic, though, you'd better take some time to sort out where you want to go, musically, and how you think you can best get there. What musical elements do you prefer to work with? What sort of sound are you aiming for? What's your creative 'comfort zone'? Actually, these should've been on your mind when getting the initial setup, along with the question of WHY is it necessary to make use of a modular rig in your work?