Hello Luca,
Thank you for you kind feedback!
For the frequency it maybe that your Control Point Count on the Braid deformer is little bit on the lower side, hence the real frequency is not being shown.
In the video you can see how the Control Point Count changes the entire look of the Braid. Also the Additional Subdivision setting under the Viewport Display menu will visually increase the resolution of the hairs as well.
You could also try to play with the Braid Frequency parameter by adding Curve Mask Group
and maybe doing something like this:
The Region Maps are not supported by the Braid deformer yet.