This sounds like it would be useful, however it extends the /ignore feature from applying to incoming messages, which was its original purpose, to applying to features that react to incoming messages. There are other features, similar to highlight, that /ignore could be used to "disable" on an incoming message, such as beeping, flashing, logging, speaking, tips, and perhaps even script events. So while I am tempted to add support for this, /ignore's original purpose would be blurred and it would require many more switches to cover other features...