Please add the ]:) and thumbs down emoji. if possible you could just use the emojis that Skype uses just to cover the bases.
Claudiu Marginean commented
I think it will be a good idea to include :thumbsdown: emoji in the reaction list of emoji that you can add to each of the message.
This way, you can ask a question and the team can react with :thumbsup: or :thumbsdown: and vote that message. No need to replay and loose time to check them.
Jamie Thomson commented
will give you the thumbs down emoji. the complete list of emojis that can be used is: https://www.emojione.com/emoji/v4