one way that i would want to improve lfs is to put longer tracks. like nurburgring nordschleife which is a fairly long track and is very popular.and would be a great addon in lfs. especially for you endurance racers.
The Nürburgring, beautifully layed out in the Eifel mountains in Germany, was in reality made up out of two different tracks, the Nordschleife and the Südschleife (the North- and Southtrail) linked together by a third, the Start- und Zielschleife. Today only the Nordschleife remains, the Süd- and Start/Ziel giving way to the new track built in 1982-83. Combining the 22.8 km of the Nordschleife with the 7.4 km of Südschleife and the 2.2 km of the Start-und-Ziel gave a total lap of 28.3 km. This was used for Grand Prix for the first three years, but from 1931 only the Nordschleife was used. The Nordschleife. At over 22 km, a crueling lap with more than 170 bends. A difference in altitude of 300 meters, and at places an angle of inclination up to 11 %.