Features Board - allow columns to be wider

When I'm looking at 1 or 2 releases, and 1 or 2 parking lots on the Features Board page - there's still a lot of white/unused space in the middle. At the same time, some of the feature names are wrapping, which means I can't see as many cards on the one view as I want.

This makes it difficult to drag/drop the cards into the right order - I can only see a small number of the feature cards in the release column at any one time. If the columns could be wider, that would help.