I suggest you to take a look on Eylean board. http://www.eylean.com/?utm_source=geffort&utm_medium=content&utm_campaign=geffort
it can fit all your needs because of intuitive interface, statistics, dashboard. Also it fits any process and the most important thing it is very easy to use. This board allows you to represent several projects on one board using rows. All the rows may be visible at a time or you can remove selected ones from the scope.Another solution may be task grouping and filtering by categories - then all the tasks can be represented on one board and row, but attached to different categories.
