Let's suppose I am in one of the following situations:

* I'm a teacher or lecturer with a class full students.
* I'm at a conference doing a presentation

I want to create a team and add all the people as members. Which would be doable if I had a list of everyone's email. But often teachers don't have instant access to all of their students email addresses. Rarely would presenters know the emails of all the guests.

At present I could get a link for my team. Then convert that to QR code then project that on the wall or include the QR code in the presentation notes that guest pick up when entering.

The guests could then login and request access. Then one by one I could accept them.

This however is long winded, by the time I have accepted the guests, by presentation might be over.

I would like this process to be much faster and efficent. So efficient that it would probably be easier than using mailing lists to add people.

I would like to have the power as the owner of a team to create a special url and QR that has a short expiry period. When the QR code is snapped by someone they gain instant membership to the team.

I'd actually like the choice of being able to make two types of QR code. One where it will grant instant membership and the other where it will grant instant "Read Only"/Guest membership.

Now imagine when I am running my next work meeting will my colleagues, I can project on the wall a QR code and say, log on within the 10 mins and you'll get straight in.

However, as you can now imagine, on the wall, my screen is now somewhat stuck on the QR code whilst everyone gets out their phone. So my presentation is still off to a rocky start.

Which is why I'd prefer to be able to print in advance the QR code. So I can print them the day before. If someone tries to use it ahead of schedule or it could just work like a standard request for membership.

Now my presentation goes like this.
1) Guests walk in the door and pick up the notes.
2) I welcome them and introduce myself and say that soon we'll refer to the QR code in the notes.
3) I ask the guests to get out their phones and if they can log on within the next 10 mins then it will be seemless.
4) I simulaneously enable my 10 min expiry window
5) Voila 90% of my guests are now in the team and can access the resources. The remaining 10% that couldn't get their phones to work can wait untill later in the day and use the same QR code to request membership.
For those without a camera, hopefully I there can be a short URL unlike the current horridiously long URLs

6) I can continue with my presentation. whilst a few people are still logging in.

During the presentation I could now easily do survey polls with the crowd using Forms bot in the chat area.

I can faciliatate interactive lesson with my students. or meeting with my colleagues etc.

Teams introduces a lot of new concepts and features, especially for "non-millennials" but even for "millennials".

There should be a quick, interactive tutorial on first launch that calls out how this app works. For instance, what is a Team, what is a channel, what do @channel and @person conversations do/alert, what do favorites mean, use the add content to tabs for easy access, etc.

As a whole department, it collectively took us a while to figure it out (and still haven't figured out everything). Why not give us a quick, 30-60 second rundown of this very new concept of Teams so we can use it effectively from day one?

Your app asks for feedback. The link takes me to a website that expects me to filter existing ideas and vote, or to construct specific bug reports. This page gives advice on how best to get heard... You just asked for my voice but tell me I got to work to be heard?!

The android app errors too much, uses too much battery, and syncs poorly.
The main app doesn't notify by default on team channel messages, and there's no way of catching up with thread convos. Messages are often missed.
Status has been poor for years, marking people away even as they actively look at messages...
Overall, be more like Slack, in nearly every way.