Oh, you can adjust the shutter speed in the video pro mode?
That's nice although my Note8 can do so as well, albeit in a third party app. Samsung making it native is pretty darn cool.
On the FPS topic, I seem to be one of the few who didn't have much of an issue with the old FPS placement mostly due to my long index finger and how I hold my phone. That said, I think the placement on the S9 should be better for those of all hand sizes. My main issue with the FPS on the Note was its speed. It's rather slow in comparison to some others.