We are actually building a new riu, its in the works, I dont know whats instore for emojis, i dont believe the reaction button will have more than it does now, these are the pretty standard reaction buttons across social media is angry, happy, laughing, loving
i am trying to get us more emojis,
but its not something i can implement overnight so i guess i dontreally have an answer except wait until new riu launches
(this is something we do every 3-5 years as forum systems require updating)