Would it be possible to keep the driver's view level to the horizon? I am not a programmer but what seems a simple tweak could make a world of difference.
Some probably know this idea already from Stephane Turpin's Motion Cockpit View plugin for iRacing.
There are a lot of strong reactions about it but personally I think this is a huge improvement in sim racing. Not only in immersion but also track perception: you can see the banking and elevation that you could not see before.
(Stephane's brilliant idea made iRacing include it in the latest update: adjustable horizon tilt and pitch levels)
What it does is rotate the car, keeping the horizon level, so you perceive the track like in the real world. In sim racing tradition your eyeballs are glued to your headrest, so to speak
and you see the road always flat and level.
You need to make a mental switch to let go of what you are used to after years of sim racing, but once you do, you will wonder how you could ever have driven with your eyeballs glued to your headrest for such a long time
Watch here to get an impression of how it looks. Vids don't really do this justice, you have to experience it yourself.
http://www.youtube.com/watch?v=BSJs3oqG2T4