I agree. I love my SP3, but the quality of Windows Modern Apps is abysmal. Even those that are highly rated fall greatly short of their counterparts for iOS and Android. The inability to download for offline reading is unforgiveable, in my view. If I were a website publisher I would want all three flavors of my app (iOS, Android, Windows Universal) to look, feel, and operate the same. It's called branding. That no publishers do this now (Facebook being a possible exception) is amazing to me.