Channel only @<mention> mute

Some servers are large enough you want to be able to disable the @ notifications for specific channels but not the entire server, as is all that is currently possible. i.e. notifications for events in game "x" might interest you but not in game "y" posted in a different channel / division. This has lead me to submit a bug report as one would assume muting a specific channel would suppress these as well (as it should), however that is apparently "intended".