Follower Emotes (PARTNERS)
My Idea would fit more for Partners then for Affiliates, I think.
It would be awesome to have 1 Emote Slot free for Followers, so People can Follow my Channel and get this one special Emote as thank you.
This would directly create a sympathy between Streamer and Follower, and Followers eventually want more Emotes from the channel when they already like the follower Emote, this would raise the support insanely, I think.
Also People can share your emote with other viewers/streamers and just have a good time with some free emotes from their Favorites channels/streamers.
I personally enjoy it the most when people use my Emotes and they like it.