Exactly, my first impression when seeing the design is that it looks like a massive ticking mold timebomb. If at any point in the building's lifecycle the thic

Exactly, my first impression when seeing the design is that it looks like a massive ticking mold timebomb. If at any point in the building's lifecycle the thick glass wool insulation is wetted (such as through a building/materials fault, an accident or some very slow process), a hidden mold problem will start developing within the walls. By the time you notice it (strange smell, irritation in lungs or eyes), it will be too late and the most economical solution will be to demolish the whole house and building a new one. People who live in cold and wet climates know this all too well. OTOH, thick insulation is not required in warmer climates.