I’d really like to be able to change the exhaust tips like in previous GTs. I’d also like to be able to add intercoolers to the front (paintable!), along with have some “official” aero components for some cars from manufacturers like Nismo, TRD, MazdaSpeed, STi, Ralli Art, Mugen, RE Amemyia, Spoon. Nothing too crazy, don’t need Veilside or Varis style body kits, just the factory aftermarket parts.
I’d also love to be able to change brake rotors and calipers, along with paint the calipers.
I’d also like more control when painting wheels. I’d like to choose my own colour for lug nuts, along with be able to paint different parts of the wheel different colours.
The big carbon GT wings are a nice option to have, but honestly I can live without them. I’d rather have official aero pieces from manufacturers as opposed to generic fantasy GT style wangs.