The problem with using your phone as a hotspot is that CarPlay and Android Auto will not work when the phone is in that mode... if that matters to you. I want CarPlay so thats not an option.
Agree totally with Bill... its an utterly pointless feature, as everyone has big data plans on their phones these days and its far easier to stream media from your phone than faffing around in VW's clunky media system. As you say, get the basics right!