I’d like a response from the team, on a possible alternative for those who don’t want the sidebar. Or making an easy way to replace it or the possibility to disable it. If I have to be honest, it is useful but absolutely not necessary. A more useful thing would have been to have only channels and personal chats, with perhaps a button at the bottom as a link for normal messages. A very simple sidebar with only channel icons and avatars for personal messages. What the sidebar is now is too much for me. It is certainly a subjective thing, but personally I find it somewhat cumbersome.
Anyway thanks for the response, Canapin!