I have kind of mixed feeling about this.
While like you, I want the original vanilla experience, it is also true that they won't deliver a 100%, and in that case seeing a few fixes that Blizzard never made back doesn't seem that bad.
Obviously everyone has their own ideas about it, I'm not saying you are wrong or anything, but personally I don't mind if LoS works properly. To each their own, I guess. Just my two cents.