Adding any emoji as a reaction remains under review.
I am marking this as partially done to let you know a new reactions bar with Like, Heart, Laugh, Surprised, Sad, and Angry has begun rolling out to all users.
An error occurred while saving the commentAaron commented
This is ridiculous! People are asking questions in teams and we can't even respond with a thumbs down. Slack is a superior product. I'm going to swap to Slack.