It’s helpful when you get back to the game after some time, e.g. when you can only play on weekends or even more infrequent.
People requested even some kind of flashbacks when resuming a game after some while (“What happened last time in Thimbleweed Park…”). That may be one reason Ron added those ToDo lists (and even this current implementation was a lot of work).
Like ‘hasard azzezzment’? 