[David Packman]

It would be interesting to have an 1 or 2 hour series exclusively with long tracks and maybe even something like IMSA/WEC/LMP/GT endurance cars.

There are 3 Kunos AC tracks over 10km (Black Cat County long, Highlands Long, Nordschleiffe) and there are a few very high quality mods on race department that are in the 10km-15km range:

Feldbergring (11.6km) (highest rated AC track mod in racedept): https://www.racedepartment.com/downloads...ing.21195/
Deutschlandring (10.0km) (5th highest rated AC track mod): https://www.racedepartment.com/downloads...ing.25977/
La Sarthe (13.6km) (2nd most downloaded AC track mod): https://www.racedepartment.com/downloads...2017.2482/