It’s useful to study the positions you might see in a game and prep your opening lines and plans before you play. Obviously if you playing a random opponent it’s not that useful, but there are leagues such as the 45+45 league where you know your opponent up to a week in advance.
Ah I hadn't clocked that part - it's actually a tool to get the upper-hand against a _particular_ known opponent. Not that useful to me, but cool to know it exists!
