[CHANNELS] Post Order - Use Top Down (Recent -Old)

I work on a team of 90+ of tech support advisors, and we're all quick to try out new features, so we can be prepared for user questions. I've just implemented this on my Teams app using the toggle feature for "Try the new Teams" to test it out, as has more than half of my team. Some of us are able to return to the "old" version, while some of us cannot, myself included. 99% of us absolutely abhor this new top-down approach. This does NOT follow common IM standards, i.e., FB Messenger (not FB feed), WhatsApp, other Messages apps, etc. Email, (Outlook, as the op mentioned), is basically the ONLY exception, aside from other Social Media sites, as mentioned in other posts, which are also, not true IM apps. Also, with email, we have the option to sort our mail newest on top, or oldest on top. With this new Teams, we don't have that choice. If you want to provide a top-down approach to the messages, fine, but at least give us the option to choose if we want to use it.