After using Slack on my team for about a year to get away from the annoyances of Lync/Skype for Business, management made us shut it down for not being an appro

After using Slack on my team for about a year to get away from the annoyances of Lync/Skype for Business, management made us shut it down for not being an approved product/not defined by company policy/contributing to team fragmentation across other depts who weren't on it. Fair enough, I guess. We turned on Teams as it comes with our existing Office 365 subscription and we are much likelier to get approval to use it for cost and "Microsoft is a known quantity" reasons. I was excited for something that would finally help us transition into using anything better than Lync compabywide. So I was disappointed with the chat experience, the notifications, the way my colleagues still using Lync wouldn't consistently get my messages, and the way groups vs private messages are displayed. We all found it really frustrating to use.