Unworkable and nuts. If it’s common property which it is it’s not your worry, it’s your body corp’s. What you may need to fight them over is what it all looks like when it’s done. As you say, it may devalue your property should they do something that doesn’t do justice to the visual if they feel they can just do whatever cheaper. Sure shows little wisdom for the look and affect of their own properties as well. Man, some folks are silly on these things.