Skype Meetings App (SMA) improvements on their way.
The good news for MacOS users: Video-based Screen Sharing (VbSS) is now supported, that could be an improvement instead of RDP.
The drawback: This version of SMA still requires you to have administrator permissions on your computer. Something they should change as soon as possible. https://techcommunity.microsoft.com/t5/Skype-for-Business-Blog/Skype-Meetings-App-improvements-in-the-works/ba-p/280828