In addition to emoji reactions and the existing idea to add speech bubbles above people who typed in the chats: we would love the possibility to display speech bubbles with a short text (~20 characters). Use Case: for meetings in the "Open Space" format, where I want to decide which group I am joining next. Usually we hold these meetings after a frontal talk, so we already know that we will speak about a certain topic at some point in the Open Space, but not everyone who is interested in that topic knows when and where the discussion starts. A visual indicatior would help to be aware this topic is currently being discussed (i.e. Speach bubble which says <topic xy>).
We know we could use the chat for this, but this is a little bit hidden and not directly visible, especially when you switched to participants list or build mode in between...