Provide 'Meet Now' or 'Share Window' button for one-on-one chats.
During a chat with a single user, there is no 'Meet Now' button or 'Share Window' functionality.
In SfB, I am able to simply share content with another person without needing to create a voice or video call.
In Teams, we cannot do this. My options are to start a video/voice call or to schedule a meeting.
Skype for Business provides a far superior experience, as I can immediately begin sharing with a contact without a voice/video cal. If you expect companies to adopt this as a new platform, you simply cannot make basic functionality more difficult. Furthermore, you allow a 'Meet Now' button in a 'Team chat', which for me is FAR less useful than with an individual who may not be directly on my 'Team'