The chances of oblivion's track being changed is probably 000001/100, but if they did I think they could possibly update the track from the point after you exit the second hole. I have made an image with Full credit of TOWERS TIMES as it was from their website, and an image of Oblivion the black hole.
I know there is so many limitations as one they would need to submit a full planning application. Also x-sector is on the edge of the park so they wouldn't be able to build out of the boundaries like it is here. But still I think even a loop/inversion after the exit would keep even more an interest to the public in the long run. The ride to me is perfectly fine as it is, but If it ever were to get to the point to change the track I would love so see something like Oblivion the black hole has.
Would love to hear your thoughts