I would like to see the cars be more interactive. For example you can open the doors, windows, hood/bonnet,  trunk/boot and pop the lights  up on cars that have pop-up lights (like  the XRGT.)
I know this is pretty pointless, but it would add to the realism.
                
            I know this is pretty pointless, but it would add to the realism.



 Open windows create extra drag...


 I'm not sure the time required to encode a player into LFS would be justified by the amount of use it would get. When it comes to the devs' workload, physics/collisions/sound - important car stuff - should come first every time 