WORKING PANORAMIC SUNROOFS!!!
Now that we've seen how crazy rockstar is going with the car customisation I really hope they add working panoramic sunroofs for the extra bit of immersion. This is something that's missing in a lot of games apart from community mods like gta rp or asserto corsa. I think it will really be useful as now we also have realistic interiors and and no first person mode so this will be one of the only ways to really look at car interiors when driving.