Possibility for more control over dismissability of banner

[luzpaz]

Currently at the top of the FreeCAD mantisbt we use the announce plugin (as an intrusive banner) to educate users how to open tickets. It's cut down immensely on crap tickets that are hastily opened and hopelessly incomplete. The problem is that users can dismiss this banner and then forget in the future to follow the directions. If we make the banner indissmissable, then all the power users are subject to this enormous banner taking up screen real-estate.

The ask: Would it be possible to create a rule that makes the banner indismissable to reporters, and dismissable to everyone with a higher permission ?