We just released Storytime last week in beta, so it's still quite basic in its feature set :P What kind of hooks would you like? (e.g. on certain events, trigger certain callbacks?)
I'd want to get all events occurring (through a webhook for example) and then make API calls to send both online and offline messages. Offline messages as a way of maybe sending product updates. Online messages to engage users as they're going through their journey
If you email me at alex [at] papercups.io I can keep you posted on our updates!