One of the best aspects of Heroes and Demons is that if you want to go into the Briar patch, you have everything you need. There is also a ninth Neutral Zone Mission and a nineteenth Nebula.
Thematically (and minorly inconveinced) there is another Acquisition mission for Ferengi which also doubles as an Intelligence mission for the Cardassians and Romulans.
From a storytelling perspective, we have a new Betazed Mission.
Looking through the missions available, which one is missing. Do you need another planet with X or a nebula with Y? Is there a specific location you want depicted on a card? Let us know!