I would love to be able to go into custom games by myself so I don't need someone else to join whenever I want to practice movement or just learn some of the maps a little better. This would be especially useful now that the Coldwind rework is live and the layout has been changed (and with Thompson house being an actual maze to navigate now). I think this would also be very helpful to new survivors who lack much of the experience of knowing where they can run to in a chase.