I posted this earlier in the thread, but if you overlay the original pre-renovation blueprints for the Saddledome with the floor plans for the new building, the seating layouts are nearly identical.
If you remove the upper sections of the 300 level of the Saddledome, the two seating bowls line up almost 100%. Based on that, I'd expect the slope of the seating bowls in the new building to be very similar to what we're all used to in the Saddledome.