Microsoft
Helpful, but I think Microsoft is behind the curve here....
Why would you want teachers to share even more to students (ie send them a powerpoint) over an email, etc.
In this day and age of cloud based, distributed networks and mobile technology - teacher who is still showing PowerPoints to students should make them available as part of an embedded LMS, but classroom environments should me more capable of distributing to other screens quickly, rather than sharing and getting an email link to a shared document.
Should be focused on a a tool or button that when clicked, while share directly with students so they can follow along and when prompted, answer an embedded quiz.
Forms still has a ways to go (searching and organizing my over 100 forms into folders would be a good start) and sharing or distributing should be at the push of a button on the screen - email is becoming too cumbersome.