I hope someone can recreate Eurocircuit Valkenswaard. It’s my home track! I live 500m away from this great circuit.
EDIT: I do have loads of RX tracks for rF1, so if anyone have the skills to convert, it should be possible (not sure if it possible to get a hold of Madcowie to get permission though)
In my opinion I think you should have the permission of the authors.
When you have it, it will be more likely that someone will be interested because without consent any work done will be worthless.