Dear Microsoft: respectfully, the new Outlook is terrible. It has been terrible since the first release and it continues to be terrible now. The majority of power users and IT admins agree on this point. There is a reason you had to write this blog post in response. Just know that it's okay to admit you are wrong and reverse course, even now. You did that after announcing you were abandoning OneNote for the "Windows 10" version of OneNote. This was universally hated and you reversed course (Good on you!) and now are developing on OneNote again.
Your users have spoken. "New Outlook" is fine as a replacement for Outlook Express / Windows Mail. it is NOT remotely close to being ready to replace classic Desktop Outlook included with Office. Please, this is wasted effort when you could be security-hardening and feature-enhancing Desktop Outlook once again. Reverse course. Bring back COM and VSTO add-ins. Bring back classic Outlook.