I've always thought that his ride could merge the DF and FV together with relocation and re theming...
I would place it somewhere around here--

Basically the story is that the phallanx were to busy fighting nemesis that they didn't notice something much worse behinds them, and eventually it took over and pulled there base into the DF
Now. The TV's in the queue would have static on the with flickers of the phallanx logo and the TH13TEEN girl, baggage is similar to TH13TEEN's. now instead of the 'big muscly men' saw before, there is a skinny, man with a ripped phallanx uniform on which tells you to watch the TV's at his 'home made' video. It tells you how it attacked ect...
Now if you look closely on the walls the will be dead guards pinned to the metal via roots. When you get into the lift its old and 'creaky' meaning the light flickers and the is a slight thump heard as it goes down.
The cave is coved with roots and dead guards.
Now where the egg was held is now covered with roots and the tesla coils? Are now n snapped and bent. The ride is pretty similar except the when you get to the top the TH13TEEN girl says 'ill give you a 30 second chance...for fun....
The end lift is the same but with you hearing the girl screaming 'I want you to stay!' You then exit the ride with loud bands on the walls making you jump.
It's name, TH13TEEN:Undergrowth