I don't think that really matters to be honest. There are many parks that hold onto and maintain their classic attractions because they are regarded as a signature attraction to the park or it has done a fantastic job of retaining its popularity and relevency in the public eye. Dreamworld closed Eureka primarily as a cost-cutting measure, and that was right in the middle of Dreamworld's dark days where CEOs were being replaced every two seconds and bone-headed moves like Mick Doohan were being made. They probably had every opportunity to retrofit the ride with state of the art technology to keep it up to snuff with modern health and saftey standards but chose not to and focused on other things instead. It's been nearly eight years since then and there are new people in charge who so far in my opinion have been making some pretty solid moves to improve the park's presentation. The location of the Eureka Mountain is in a prime spot for a big attraction of some kind and the new management at Dreamworld would be silly just to let it go to waste like it has been for the past eight years. Whether they revive the Mine Ride or put in something completely new, I can guarantee you something big will happen in that spot, especially with the Commonwealth Games coming up in three years and the 30th anniversary of Gold Rush Country next year.