Be able to reference other Teams to enable Cross Team Communication
So basically when in a team channel you would be able to reference other Public teams in a message (Like you would an individual/channel in that team). When this happens that message thread would then appear in both the channel it was written in and the General Channel of the team referenced. All replies would then appear in both.
Perhaps as a configuration at team level you could say what channel this cross team communication goes into, so perhaps you might have a dedicated channel.
Going further it would also be good to reference other individuals who are not in the team to ask them a question also. So this message would appear in the channel, and the individuals chat.
This would avoid the need for joint teams, or to a worse extent the whole company ending up in a channel.
I keep asking for this as well. Organizing people into functional Teams is useless without being able to communicate across them.
Mike Jackson commented
This is a feature in Skype we are really need in Teams.