Give an option for store pages to disable/hide the subscribe button. This would stop people from subscribing to a store that has no plans to use EasySubscribers, so people aren't mislead into thinking they are already subscribed for in-world updates when that store may actually be using a different system or doesn't want to use a subscriber. This could cause a store to miss out on a few potential customers since most won't seek to join additional in-world systems/groups/etc as long as they believe they're already apart of one