I remember David Cherry telling me how one of his first covers was modified by the art director without notifying him (on the original, no less!). The character on the front is illustrated holding a sword over her head, which the art director decided needed to be shorter so they could fit the title and author. (Admittedly, this was before Photoshop or its ilk existed.)
Then again, the author was his sister (C.J. Cherryh), so he wasn't going to complain
too much.
