On classic boards one can edit the card and list view according to ones needs. Thus the important informations of all listed issues can be seen and compared directly in the list.
For the Scrum Boards it is only possible to edit the details of the "Issue Detail View", which only shows the details for one issue at a time. So it is needed to click on each issue to see the important information or switch to the issue navigator.
Our projects have a fairly large amount of issues per sprint and so it is not practical to click on every issue all the time.
Therefor we need the option to choose the shown issue details for the new agile boards.