Just came across an interesting quote from Mark Kerrigan.
We will be keeping the rides in X-Sector and our new Fried Chicken Co. restaurant open throughout the build process this season so guests will be able to see what’s going on – or at least, the first part of the development! Of course, the exact nature will remain top secret until the last possible minute!
The bit in bold interests me.
May be I'm just reading into it a little bit but I interpret that as the 'world's first' is going to be something contained within the building. Unless he's just generalising that they want to keep things as secret as possible. So I still wouldn't rule out something happening with the vertical lift.
I still find it strange the ride enters and exits the building on different levels. While there isn't much room and there could just be a quick drop inside I still think there's a possibility of
something happening within the building.