Engineers and people that are more adept at math than myself. They claim it could be as steep as 60 degrees, but the angles of that piece preclude vertical. I think 60 degrees will be unnerving enough.
Regarding the vertical lift, I think you're trying to force you're desire/wish onto a coaster that just isn't going to have it - period. Every vertical lift regardless of manufacturer (HRRR) has two chains, while the ONLY other giga coaster in the world has a cable lift, with track identical to KDs.
Let's be honest about Intamin, they innovate like no one else, and pay the price with reliability issues more times than not. If I were CF, the last thing I would want is a new type of lift on what appears to be the largest gravity coaster in the world.