You have screwed up the usability of Outlook.
You can't sync the calendar to your phone.
There is no click button to send/receive emails. This is a simple thing you have screwed up.
You have even screwed up the way people can give feedback. This is a horrible interface. Clunky, and is visually "We don't really give a **** if you don't like the new Outlook!" I will be looking closer at using Google in the very near future as more corporations are moving away from your offerings.