Right now when creating an Email Sequence my only option is to send it to a defined set of contacts. I think this needs the ability to also just be able to save the sequence so that I can add new subscribers to that sequence via a workflow. So when someone signs up to my Email List I would want them to start to receive the already created 'Welcome Sequence' right away but I don't see any way to do this in the new Sequences setup and that particular subscriber didn't exists when I created and sent the sequence previously. So my only option is to stay with my sequence that I created in Workflows.