These are just crude ideas, but please take them into consideration

1 - In the car setup screen, there could maybe be a button that triggers an animation of the car going over bumpy/smooth tarmac, or rallycross dirt that could make tuning the car's suspension a lot easier. There would also be a speed slider to control how fast the animation is played.

2 - In the car info tab in the garage (Engine type, Power, Displacement, etc.), if there was a v8 engine in the car then the info would display if it was a flatplane or a crossplane.

I like both ideas! at least 2nd option could be added instantly, while first one... I guess we need to wait up "few patches" first.