Need a way to know which Members are assigned to a Trello card . And also need the ability to change it from Aha!
Thank you for your idea. This is something that was considered (and is supported in many of our integrations.) Unfortunately Trello does not expose the email address for members via the API. So there is not a way to match the users with certainty.
At this time we are unlikely to implement this idea based on this limitation. If the capability of the Trello API changes and we get continued support for this idea from customers, we will reconsider.