Topical gap in articles
The articles your competitors have published, grouped into topics by their headings and checked against your site. Keep the topics that fit your topical map, fix the grouping by hand — and for each one see whether it belongs on a page you already have or on a new one.
A topic list, not a keyword dump
Competitor articles grouped into topics by what their headings are about — with how many competitors write on each and the articles behind it. Mark each one core, supporting or skip as you go.
Expand or create
Every topic is checked against your whole site: missing, partly covered or covered. If a page of yours is close enough, grow it — with the sections competitors answer and it doesn’t — instead of a new URL.
Your grouping, your map
Drag an article to another topic, merge two topics, split one, rename it, or make the grouping broader or finer. Coverage against your site is recalculated on every change, free.