Since anchors are not that important anymore and can do more harm than good if forced, it would be a good idea to have the option in GSA SER to select any word/words in the article as anchor. This option can be added in the Data tab and be added as percentage(just as the "Partial match anchor text", "Branding anchor text", "LSI anchor text".. etc).
An optional setting for this feature would be: Select how many words should GSA SER try to put in anchor (between X and Y). X and Y should be selected by the user.
If there's a way to do this currently I apologize and I'm looking forward to hearing the solution.