Don't they have the Jumping Competition there? People like Petter Solberg have been known to go about 120m off the jump, I kid you not. You're right, Delta, Ouninpohja would be awesome, but sadly with the inclusion of the 22km Nurburgring, I doubt there will be room for it.
In a similar vein, what about Ocana-Radicale? It's currently the hardest inactive rally stage around, some 80km wrapped around the cliffs of Corsica where there is frequntly nothing between the drivers and the Med other than a 300-400ft drop ...