As a Rapid Board user i would like a compact UI displaying as many cards as the classic board can

The Classic task board easily fits twice as many cards.

And with the extra spacing the Rapid Board is still a lot harder to distinguish cards. The exploded UI offers little benefit.

Different teams/boards will likely desire a different degree of compactness.

Suggestions for a more compact UI:

• customisable font, the rapid board's font is unnecessarily larger than classic boards and there seems no way to change this,
• customisable card height, for example specified in number of text lines, required height would often be configured proportional to number of columns,
• remove days in progress dots, not wanted and waste of screen for some teams
• configure issue links to go to normal jira issue page, completely disabling the greenhopper issue details view,
• configure individual columns to hide sub-tasks, for example sub-tasks in the "To Do" column may need not be visible and therefore save a lot of screen UI.