It's possible... but stupid. The chain would be some disgusting weight unless it was a cable lift-hill, and in either case it would require a hell of a lot of land, unless the lift-hill was vertical... which wouldn't be fun to evacuate at 400ft.
Coasters with lift-hills aren't going to die, but I think the possibility of the tallest and fastest rollercoaster ever having a lift hill again is not likely at all.
- Maliboomer