I don't think a tilt or a dive really makes that much sense for this plot of land. In a Reddit thread about this topic, I put forward the idea of sticking a modern Vekoma flyer in this plot. This would be a great way for Six Flags to make a statement with a state-of-the-art coaster at what is now the home base of the entire chain, and it would also pay homage to Nighthawk. They might even want to carry over the Nighthawk name in some capacity. I think a flyer right in the center of the park would be cool aesthetically, and Vekoma could surely make something magical happen if they're given free rein by Six Flags.
Would be a dream! Flying over the water was a major highlight on Nighthawk - having that back would be incredible. It's a great plot for a flyer.
The only unfortunate thing is the model's inability to do intense lying elements - that's a bummer.
Or a thrill glider if the one goes well at magic mountain?
I hope to god not!