I'm glad I read up a few posts. I thought "not applicable" meant ineligible for voting.
Yeh, maybe not the best username if you want to take part in a contest where people have to vote for you! (and thanks for the vote, MC120 👍)
How about modifying an existing circuit? I know a lot of people are disappointed with the way the Hockenheim modification turned out; the challenge could be to get us to make changes to the circuit to make it better, but at the same time retain enough of the original character so that we know which one it is.Last idea-infield road courses?
A high speed, shortened version of the classis 24 Heures de Mans circuit (Circuit de la Sarthe), incorporating the opening section of the original track, a few corners of the Moto GP (Bugatti) circuits at Le Mans, and connected by new stretches of track designed to resemble famous corners in the further reaches of the 24 Heures De Mans circuit.