I think it would be fun to be able to high five another player (mostly because I seem incapable of properly executing a high five in RL despite many hours of practice). It could result in a small mood boost and possibly some twinkly sparkles or a starry rainbow a la super harvest or random kindness. A running jump high five would be pretty fun too. I know that the high five suggestion has been made for the Emo Bear, but I feel it would be fun to see it happen between players rather than just have the Emo Bear animation pop up. Thoughts?