→ Allow modifications to the interiors, For example, If one buys a Porsche they get different interior options.
→ This will be something no other game have done. Plain color selection is implemented in a lot of games and this will help FH5 compete with other customization games
ac evo does it
Test drive unlimited had it years ago
Motorfest does it for almost all vehicles, and Forza have dabbled their toe into it with certain interior parts that are linked to the exterior and change color accordingly. Examples include the 2018 Audi RS 4 Avant, whose steering wheel trim can be painted to match or finished in any material. I hope something like this gets added to all vehicles going forward, similar to back in FH4 when only the McLaren Senna had paintable brake calipers; in FH5 they were paintable on all cars. As it stands on the RS 4 if you want a normal color with carbon fiber interior trim for example you have to paint the whole vehicle in carbon fiber and then apply a full body vinyl for the color, which restricts material to just gloss or matte and no option for dual tone or metallic.
The 2021 Porsche 911 GT3 and 2023 GT3 RS both have interior customization, the GT3’s seatbelts and stitching are linked to the manufacturer color while the GT3 RS takes it a step further and also changes the color of the inner door panel and seat backs which makes for an almost endless choice of color combinations. I do think the chances of seeing interior customization for all vehicles in FH6 are pretty high because of these two.