Honestly, I think if you took a poll of the average KI visitor, they'd look at the words "giga" and "invert" and say, "What the heck does that mean?"
I believe the average KI visitor just wants to ride a ride. Doesn't matter if it's an invert, giga, sit down, floorless, flying, 4D, ect. All this talk of what Kings Island "needs", I don't think the average visitor thinks about what the park "needs". If it's a new B&M coaster or Intamin, they will line up in droves to ride it because it's new.
It doesn't even have to be a roller coaster. It could be a flat ride. Heck, it could be a new bathroom!
Dededededededededededededeeededede
Remember the thing that said they were building a bathroom?