https://www.pcgamer.com/anthem-reportedly-got-a-name-change-and-flying-just-before-e3-2017/

Anthem took so long to come together that it was still called 'Beyond' just days before the E3 2017 reveal, according to a report from Kotaku. Speaking with 19 people involved in or close to the game's development, the report paints a grim picture of the RPG studio and the creation of its disappointing looter shooter. 

That's another thing that wasn't settled on straight away, apparently. Some core bits are familiar—the Iron Man suits, a mysterious world—but all the grinding for gear would come much later. Instead, there were elements which almost had a survival bent, including procedural combat encounters, dynamic weather and a more complicated ecology.