The "analyze" feature works pretty well.

My comments underindex on "this" - because I have drilled into my communication style never to use pronouns without clear one-word antecedents, meaning I use "this" less frequently that I would otherwise.

They also underindex on "should" - a word I have drilled OUT of my communication style, since it is judgy and triggers a defensive reaction in others when used. (If required, I prefer "ought to")

My comments also underindex on personal pronouns (I, my). Again, my thought on good, interesting writing is that these are to be avoided.

In case anyone cares.