It's good to hear 0% depreciation on used parts but, what's the point, if the required part is not readily available in local market. Insurance companies, be it any, are only looking into their annual premium; availability of parts are never their concern. It is the customer,in such scenario, to have first-hand knowledge, on finding the required parts, worst if it needs to be imported. So, I believe, it works in certain JDM car models and not in all models. The premium paid, though might be useful in other un-forseen situations you listed in your post.