Hey Folks, my name is and I’m working at Nevigo, the company behind articy:draft. So it’s great to read, that our software supports your workflows so well!
But HeadClot is right so far. I have to admit, that it’s not the strength of articy:draft to manage single tasks of your game development like Trello does. Trello is a very fine way to support
your work with articy (I do so for my private projects as well). I think you can benefit most for your development using articy:draft 
combined with further taskmanagement tools, like , Trello and so on.
And yes, we’re totally open for your suggestions and feature requests. Your interaction with us, as a developer, really helps us on our way.
For myself as a UE4 as well, an integration / plugin / whatever of articy:draft <-> UE4 would be a blast 
So sorry for the shameless self-advertising But I can totally understand your demands.
Cheers,