There used to be a trello board w/ the public dev agenda which has been made unavailable though, as it led people to be upset when things were shifted around and priorities were set anew. Your best bet at the moment is to check the public Enscape roadmap on the main page.
What would be great if the Enscape Team - Demian Gutberlet - could provide like a short list of like the top 5 or 10 currently most upvoted topics on a monthly or bi-monthly basis. This would at least act as an indicator what's in demand right now..