A user whose issue has been solved and closed wants to reopen the case because something has to be done again (correction, enhancement, …). To reopen the issue the user can move the slider or change the status.
What we need: If the user reopens the issue, a popup window should appear where he can (or maybe must) write a comment why he reopens the issue.
It is also important that the people assigned to the issue are notified that the ticket has been reopen.