At the moment you have for the shout-box, Anyone, guild Members & None site members as permission to use. It would be nice to be able to remove an individuals permission from using the shout-box as a way of stopping people misusing it. Some people might post things that are offensive to others in forums & shout-box. If this happens we give 3 warnings then ban them from site but if we were allowed to remove their permission to use both shout-box & forums permissions (I know you can already remove their permission to use the forum), it might make them think before posting or shouting. It would be used as a punishment for abusing either in the forums or in the shout-box.
This request did not reach the 20 vote threshold to be reviewed. :(
For more information about the Feature Request process, check out this knowledgebase article: https://guildlaunch.uservoice.com/knowledgebase/articles/366826-how-does-the-feature-request-system-work
If you are still interested in this feature and feel it would be a good fit, you can always resubmit the idea. :)