Could probably be made by using the 'Mud Pit' as a base and setting up a few barriers.
Although I'm more in favour of finishing existing WIP tracks and creating new, unique and more interesting tracks instead, considering we already have 3 oval options available. I really think regular tracks like Gravel, the Tarmacs, Sandpits and Mixeds allow for much more replayability.
I personally hope for a Gravel 2. A more off-roady course that's slightly longer. Something like a miniaturised Sandpit 3 in terms of layout, but with more bumps in the road, optimised for the rally suspension, which does need more work in order to become viable.