like ffz and bttv but built into twitch, community emotes would be uploaded by any user to the public emote library which streamers can select up to 50 emotes for their community to use without needing to be a sub or use channel points. The library can be used for the twitch premium personal emotes as well https://twitch.uservoice.com/forums/310237-ads/suggestions/41392177-twitch-premium