Emote spamming drives me up the wall. It's not just the text box spam, though - it's the noise. The constant squeaking and cheering and whatever else it is that people love to spam. It's a person's right to do that if they want, but it's so prolific that it's obnoxious to have to turn off my speakers every time I go to a market board or the tomestone vendor.
It would be nice to be able to silence them without having to silence the entire game or go into my options and specifically turn voices off, only to go back and revert all of it once I'm away from the spammer. I don't want to impede on other peoples' right to do whatever they want in chat... I just don't want to be forced to hear it.
I already blacklist them so that my text box isn't exploding with their spam clicking on an emote. I believe if it were possible that it would be a nice QoL change to implement a client-side silence on the person's character's sounds, too.