However, you dont need a huge heartline, or one at all at slow speeds.
This starts off the same way. When your banking starts at 0 you wont see anything like what you saw with the Dark Knight pictures NOR will you see the reverse of that which would be a Inverted Coaster Heartline. Why? The speed is just too slow and the banking not enough. The real heartline kicks in prolly at about 25 degrees of banking.
If this ride EVER reaches 0.2 lateral G's then I don't even know how there was an argument in the first place. That is clearly unacceptable and will KILL bobbyjo on instant.