I understand a new ride would be a perfect replacement however I feel there are other ways to fill the empty space.
My idea would be an "X-sector Hub" where interactive Screens themed around the rides would show relevant images and information. The Hub itself would be a tall, pole like structure with wires hanging off it. The screens would be attached by robotic arms and the hub would be topped off with a large flashing light. The Hub would not only act as a piece of theming but it would also link all of the rides in X-sector together. The Screens could be as follows:The Smiler Screen
This screen would tell you when the ride opened and what the Ministry Of Joy are trying to achieve with it's creation. It would also show you the 5 marmalisation methods and play videos about each one.The Oblivion Files Screen
This screen would show The Lord Of Darkness. He would explain that Oblivion was the first test to be created and is therefore used to break down advocates minds before the final stage of marmalisation. The screen would also show footage of the train emerging from the hole with nobody inside and play edited versions of the original Oblivion advert.The Illusion Screen
This screen would show the user a range of optical illusions and pretend to scan their brain patterns. It would go through a process of checking their DNA and would end in a CCTV camera on top of the screen moving and flashing. After this process it would ask for the users height and either say;"Unsuitable Advocate" or "Advocate accepted-X-sector awaits". This machine would work entirely on height restrictions but would appear to operate by using technological systems.The Test Screen
This screen would have Oblivion's, The Smiler's and Enterprises logos on a touch screen. If a logo is touched it would load a quiz on the selected ride. If any questions were answered wrongly emergency lights on the screen would flash and "FAILED ADVOCATE" would appear in written form. The screen would then show real-time footage of the user and appear to drop them through the floor followed by the message-"FAILED ADVOCATE DISPOSED"
I think a system like this could be a great asset to X-sector and would connect all of the rides in some way.