I feel like extreme aero like you see on Hillclimb event cars would be a nice addition to certain cars at the cost of top speed, but to provide decent grip (and also insane looks)
They did Big Country Labs for FH5 with adjustable aero which was amazing. Would be nice to have huge aero elements for front splitter/canards and rear diffusers.
Credit to YT channel HillClimb Monsters for the inspiration