I'd like to chime in on the flying coaster vs wing coaster vs dive coaster debate.
Personally, I would LOVE for a B&M flying coaster to replace Nighthawk and/or Vortex. It would make for a cool centerpiece to the park, if they could get the world's first launched B&M flying coaster, that would be even more awesome and unique IMO.
Regardless of what comes to that spot (because I do believe Nighthawk's days are numbered), I would hope it's not a dive coaster. I get that they're kinda trendy (especially for Cedar Fair) right now, but they're getting to be so common. I would much prefer something that would continue the trend of putting Carowinds on the map. Maybe a dive could do that to an extent, but I think something more unique would work better.