With numerous features for an enterprise program, it becomes hard to use even the "small" card in the Feature Board. It is best to provide a "single-line" card, with hover text showing full details of each feature. Without this, backlog grooming is tideous with constant scrolling!
Thank you for the idea. Given the low volume of support for this idea, we do not have plans to make updates in this area at this time. It is currently possible to customize what information appears on feature cards, so that you only see the details you need. We hope that helps!