For a game like GTsport, with loads of GT300 en GT500 Cars, Japanese Brands and even TCR-ish cars like the Mitsu Lancer, I miss Twin Ring Motegi the most. It's an all-in-one track, hopefully, if it will arrive to GTsport, also with the asymmetrical oval.
A top track, designed for GT races and endurance races just like a few tracks elsewhere, Sonoma, Laguna Seca and Spa for example.
Motegi should make most people happy, 3 lay-outs without the oval, 4 with the oval.
The back straight, braking while you go downhill and turn the car hard to the right under the bridge towards start/finish is one of my favourite sectors overall