I like the experience a lot, but no editing functionality is a dealbreaker, and no emoji reactions makes it a tough sell. No inline emojis is too bad, but falling back to old-school text emojis works for my peers to prevent text-only miscommunication – but perhaps won't for other audiences.

Those things are the roadmap! Scope is very large for a Slack alternative.

First version of editing has landed :). A lot of room for improvements but we want to fix all dealbreakers as soon as possible. We'll work on emojis soon too! :)