I'm using Agile Board a lot and one thing I am missing so far is to better get a feel of the size of stories/swimlanes. Since our sprints span 1 month and tend to be large, we usually collapse all swimlanes we are not currently working on to get a better overview.
A simple total estimation at the start or end of the swimlane title would help a lot. Some custom coloring, different font size or icons could also be useful.
What are your thoughts?