Support 100%. It would give the player more control over the forces throughout the ride, and would provide smoother transitions in and out of various elements. Dare I say added realism?
To be clear: "Heartlining" is the technique of rolling the track around the car, using the passenger's center of gravity as an axis.
http://cache.rcdb.com/ic2001hj81m9g0042c2020.jpg
The "Heartline" concept has been around since the mid-80's. Today, there isn't a ride manufactured that doesn't use this standard.
http://cache.rcdb.com/9h20go00430vg0000020f0.jpg
http://cache.rcdb.com/hku0462t09s000310m80g0.jpg
And that heartline is maintained throughout the entire ride. To see en extreme case of heartlining, go watch a POV of Intimidator 305. Those 1-second banking transitions wouldn't be possible without the heartlining method.
Basically, you're manipulating the rider's trajectory, using their center of gravity as an axis. Instead of the axis being centered in the track. This isn't a style, it's a standard.