Tokens with more reactions could drive discoverability of the collections, which in turn allows collection creators to incentivize the interactivity.
Emote can be used to drive Evolution of NFTs. Much like hatching of Kanarias, you could burn someone’s house in the metaverse by reacting to it with 🔥 and put the fire out by 💧
Having 2 virtually same NFTs can cause random decisions when buying. If one is reacted to by a high profile individual, that one will definitely be worth more.