Emotes unlocked by subscribing to multiple channels
It would be cool if multiple streamers could come together and create emotes that are unlockable by subscribing to both streamers.
For example, I follow two streamers, one has skulls/undead stuff as his emotes, another has squirrel related stuff. They stream the same game, are members of the same community. So, it would be cool if they could have multi-streamer emotes, such as undead squirrels that are unlocked by subscribing to both.
I think this would have multiple benefits, such as cross-streamer community building and incentivize more subscribing site-wide.