This feature remains on the backlog. We will update you when we have status changes to share.
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 commentAnonymous commented
It seems you don't get how useful this actually is. If our sales team wins a deal an automatic message in Teams is created. In Slack people could celebrate/cheer/joke/etc. about this news simply by choosing the right Emoji. This is all gone now to a "thumps up". This alone could be a reason for my org to switch back to Slack.