A client came to us needing a recommendation for a headless CMS to run multiple portal applications. With the requirement that we provide a headless option, and the knowledge that the editors love Episerver's features, it took us all of two seconds to come up with Episerver's Content Delivery API as a solution.
Content modeling can be a tricky thing. If done incorrectly, it can cause all kinds of headaches for editors. And trust me when I say going back to update the structure of your content after your project is live is worse. It's something you want to get right the first time.