I think it’d be very useful make it so developers can create parts that are completely unaffected by physics. This would be useful for creating effects, weapons, etc. because currently, because all parts are affected by collisions, creating fancy effects or weapons causes lag. Maybe a property for baseparts called “NoPhysics” or something? Forcing all parts to be affected by .Touched and collisions is just annoying sometimes because in certain situations, you want a part to exist only for its looks.