Champion-Specific Muting

I'd love to be able to access an option for muting the voices of a specific champion only. What if I enjoy listening to Darius spamming /laugh or Lux's little /taunt quips, but I don't want to hear Tahm Kench and Illaoi being sacrilegious. Or maybe I like Rek'sai's growls, but get tired of hearing people spam /laugh on Blitzcrank.

Make it happen, Riot.