I've always enjoyed Ashford's work, and loved her in Kinky Boots. The problem I have is when others choose to sing "The History of Wrong Guys" for auditions, etc, and feel they have to imitate her. What to me sounded authentic coming from Ashford just sounds like caricature coming from others.
A few years back, I got to accompany one of my former students in the song, during the time when she had been with the Broadway and tour companies of the show (and understudied that role). She did the song her own way, without feeling the need to channel Ashford directly, and it was great!