Typeface designers frequently seem to assume the more OT features their fonts have the better. Typeface users, on the other side, don’t always share this delight. They are often stressed by the complexity, don’t get any sense out of them or just ignore the features. Since I am both a designer and a user of typefaces I tend to sway from one position to the other.
In my work, where I am involved with script typeface design, OpenType features and coding play a very big role. I would say that a natural looking contemporary script typeface is not imaginable without an extended OT feature code.