I would love to have the ability to manually drop in a subscriber halfway through an automation. Perhaps a little (+) button at the top of actions, events and conditions that allow you to type in an email address or susbriber ID. As a beginner of ConvertKit, I made a series of early mistakes that have resulted in subscribers being stuck in automations they shouldnt, or have gone down the wrong paths due to missing a certain detail in my emails, or a test automation hasn't gone to plan. Don't get me wrong, the automation interface is incredibly intuitive, but it needs to be more user friendly with regards to the manual organisation. Being able to easily fix mistakes quickly would be ideal as it stops subscribers from entering automations that are irrelevant, thus eventually leading to an unsubscription.