Yes, as Guzzle says, it’s to do with declaring drag figures as it’ll affect vehicle taxation in some markets.
I think the Adelaide is a very clever and quite attractive design out of the box. The thin polished highlights make the spokes look way longer than they actually are creating an illusion of the wheels being huge!
Painting them one flat colour will make them look ‘not quite right’ and take away that athletic look, replacing it with quite a heavy looking design that would probably look very Skoda or Audi-ish.
There are literally hundreds of aftermarket designs out there but whether many will suit the very rounded off mk8 shape is down to personal taste.
Personally I’ve gone for replica VW wheels which normally I’d have been dead against, but I wanted an OEM look and didn’t want to spend a fortune having had several expensive factory wheels go out of shape due to pothole damage in the dark despite being über careful. The reps are cheap and if they break I won’t be massively upset. If I get bored of them or something better comes along it won’t cost a fortune to change. Plus I like to experiment a bit.
A very good point made about the replica hub badges not matching the new VW design but they’re small enough not to be too obvious unless you have severe car OCD issues. Unfortunately I do so I’m hoping the Chinese will be quick to get their act together