I never got to experience Phantom Theater, but I think bring it back would be great! I've always liked rides where you can just sit in a car and move through a scene, like The Haunted Mansion at Walt Disney World.
Yes I did rick roll you.
What company would make a giga for Kings Island? Would it Intamin or B&M? I think B&M should make the giga for Kings Island, just based off of the other B&M coasters at Kings Island such as Banshee and Diamondback.