Better support for working across companies.
I am a one man company. I work with many other companies for a client. We all have different email addresses. Many tools like the whiteboard don't like to work this way. Even messaging doesn't work well across company borders.
Same here: I have 2 companies and 2 different email addresses, each linked to separate client groups. When working on particular projects with particular clients, I also often receive a dedicated internal email address from their organisation, so I can make use of their internal address list and see their internal documents. In Skype for Business I could at least (although this was cumbersome as I had to log-out and log in separately everytime; mostly I had to restart the application before the change worked) change accounts.
When I log in at Teams, it automatically selects on 1 of the accounts. There does not seem to be a good option to quickly switch between accounts (or even: change accounts at all!). This is REALLY important for anyone who is not employed by a single company, but who works as an entrepreneur with many clients. Please change Teams so that with a click of the button, I can move between accounts (thus - for example - set Skype-meetings across different Outlook calendars). Really really urgent.