The team has not made a decision on whether to move forward with this feature. We will update when we have new status to share.
Great performance and user experience remain a topmost priority for us. Application launch time has seen improvements in the recent build. We will continue making improvements across the product including channel to chat switching and overall resource consumption.
We are working on a design with more density in mind. Until this design is solidified we are putting this item back to Under Review.
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.