There's nothing really wrong at all with any chicane in LFS, and some people also seem to think that esses is the same as a chicane. The problem in LFS seems to be the stupid way many people drive the tracks, not the tracks themselves. Furthermore, if you race with decent people there is no cutting at all going on. Just because people choose to drive it like an arcade game doesn't mean the chicanes necessarily need redesigning. What would be more realistic and more beneficial to the sim is if there was more of a negative effect from cutting, and certainly no advantage to be gained from doing so. In real racing they have marshals and stewards to penalise for bad behaviour. Run-off areas and places where it is possible to go off track with no disadvantage are not only common nowadays, they're become more prevalent due to safety concerns. So if realism is the goal we would see even more places where it is possible to cut a corner or chicane.
Cutting isn't occurring due to poor track design, it's occurring due to poor people design.
If people are just worried about cutting, a more relevant discussion would include questions and ideas about how a race sim might handle and deal with illegal racing without making unrealistic tracks or imposing silly penalties on innocent victims of a shunt or accident.
For those who think that LFS chicanes are not realistic, I'm certain that if you visit or drive on enough of the world's race tracks (especially club tracks) you will discover that LFS chicanes are not strange at all. Real world examples can be found, including chicanes that range from very extreme to very minimalistic in terms of their ability to slow down cars, in terms of the risk factor involved in taking the chicane fast, and in terms of overtaking opportunities created (if that was even the purpose for the inclusion of a chicane in the first place).
There are a miriad of difficulties in handling penalties fairly in a racing sim and no sim to date has ever got it quite right (without real-time human intervention) and I'm not even sure it is possible in LFS either, but I'd hate to see a reactionary redesign of LFS tracks just because people can't race properly.
2c