To be honest I don't mind 16 cars in multiplayer, for spec racing 16 cars is plentiful. However, I DO mind when it comes to multi-class racing.
I remember doing the TORA 24 hours of LeMans last year, it was a full lobby (Host +15 cars) and throughout all of my 3 two hour stints, with only 16 cars at lemans the field was so spread out I was basically hot lapping the whole 2 hours, and in my other stint, and in my other stint. It really got boring, the Last thing I want is for PCARS to have Endurance racing circuits, endurance racing cars, but when it comes to the race itself its boring as 🤬.