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 commenttdip commented
Please take a page out of Slack's playbook here (and in every other instance) and add the ability to react with ALL emojis and to add custom reactions. It allows people to respond quickly and specifically without typing a whole thing. In addition it allows teams to see personality and get to know coworkers and clients more personally while everyone is remote.