There are so many emotes and only four slots. I think to myself why buy more emotes when I can't easily use them. And there are so many good emotes. I was thinking maybe it hasn't been a thing yet is because the other three emote buttons would have to be replaced with something else. Maybe one button could mark things for your fire team like in cod warzone. One button could be used for quick chat (hello, group up, good job, etc). One could be used to turn on your ghost light and finally an emote wheel for the last. Orrr just make four emote wheels, the more the merrier! Please Bungie!