In terms of 'extreme' spinning Mack coasters, there's only the two Xtreme Spinners (Ride to Happiness and Time Traveler), Icon/Enso and Steel Taipan. All of those are launch coasters, so not like Exodus in any way really. Obviously they have some tamer spinning coasters too, but again, nothing like the scale of Exodus.
It's not impossible to imagine there being a spinning car, or a backwards row / rows, on this. But at the same time, you have to wonder if:
1. It really needs it. This is the UK's tallest coaster, do we need anything more?
2. If it will be too much. This is going to be a fast, hard-hitting ride, unlike any of Mack's other spinning coasters. Adding the spinning to it might be unnecessary.