Multi-session Voice and Videocalls

Microsoft Teams allows this:

Being on the same call with the same account, with multiple devices, at the same time!

A lot of my friends (including me) use this for example:
- Wanting to participate on a Discord call, but wanting to be able to share my face using my laptop.
- Wanting to share the screen of my tablet for drawing something (in order to explain sth for example) while being in the call with my PC. I do not want to end the call on PC, just to re-enter the call on my tablet and finding my earphones and plugging them in - why?

TLDR: Multisession support for Discord