It would be nice if there were more options for textures in Ai. The basic brush set “Wacom 6d-Brushes” was an interesting approach. Unfortunately, the brushes are not useful for round shapes. The rendering only divides the projection into straight lines. Basically, I think they are ordinary calligraphy brushes with some custom settings.
I wish that the settings for brushes in general were a bit more advanced and usable.
Opacity and speed are important parameters for intuitive drawing and would make contours so much more vivid...