Often after dying my killer does a taunt or an emote bubble, what I think would be an awesome is to be able to send an emote on death. So when you whould get killed you could pres 1-9 and the pared z emote will be shown on the killers HUD, or under the character. Whatever looks best.
I know that this isn't a gamechanging fundamental request, but something for when someone is bored and has time to spare. Nonetheless I think it would be fun.
Here's an image how it could look for a dead person, just an example to clarify my story.
And here's how it could look for the killer