When it comes to ArcheAge, it’s generally accepted that this is a pretty great fantasy sandbox that was absolutely sunk by a terrible business model (and a few other regrettable studio choices). The topic keeps popping up among that community over whether or not a subscription-only server would do a lot better today.
Switching business models is something many MMOs experiment with from time to time. We’ve certainly seen many subscription games go free-to-play, and Secret World Legends recently restarted with a F2P model instead of B2P.
Looking at the vast array of MMOs out there, which game do you think would do better if it had a different business model? You could even argue here to modify the extent of the current business model to something, say, less pay-to-win or restrictive.