So Im only in year 7, but i think it would be everyone's benefit if we added in a little wave reaction to say hello or goodbye, I mean we have a confetti reaction so why not a wave reaction? if you are worried about there being too many reactions and how it'll get too complicated then why not have an option in settings that lets you allow different reactions. my class loves the reactions option but we cannot stress this enough. we a group of tweens would like this very much because sometimes we cant wave to the camera if our videos are off and there is just an awkward silence when we leave . we cant just write in the chat goodbye or hello because i think its clear how simple and boring it is... but a reaction, now that's cool. i hope the webex team take this into consideration!