Yes, but the image tended to become to flat otherwise. Tone eq can fix that but initially I attempted to get all tone control from filmic.
With flexible curve I just mean that it can be tweaked to be completely asymmetrical for example with a huge soft curve for the highlights and a near linear toe. It’s an easy way of having most contrast where you need it regardless of where it falls in the tonal range. I have a preference for global adjustments. Imho you need to be very observant when doing local adjustments. Things can get odd in ways you don’t notice when you are working on the file.
I think @agriggio is talking about the log tonemap module here but the tone curve which does the look work is a spline as far as I understand.
I forgot that I actually figured out the saturation curve.