We known that guest cannot view the org of company, we also need to prevent guest to view the member's email address in Teams. It's a necessary security feature as well.

Powerapps connected to Teams with Tabs should function also for Guests.

It will be cool tho have the option to upload my photo profile to my GUEST account, not just my name.

Microsoft Teams indicates that I can add external members: "You can also add people outside your organization as guests by typing their email addresses.". However, when I try to add an external member with an Office 365 work account, I get an error message "You are not authorized".

BUG: Guests are not able to see additional tabs in a private channel / group chat

Where a guest is added to a Team from another organisation, their email address is visible to all other team members, and they are identified by the first part of their email address (before @).
For some types of collaboration it would be good if guests could be added in a way which give them aliases, so they can't see each others' email addresses.

Let Guest accounts be Team Owners, even if I have to license them.

Guests can be important Team members also, requiring the full access and functionality of Teams.

Creating another login in my tenant for them and asking them to switch accounts is a poor solution.

Is it possible to customise the email template that is sent to guest when they are added to a team?

for example, if we wanted to add in a sentence about our company's acceptable use policy, or something to adhere too?

Currently, organizers can only invite organization-affiliated members to join the meeting while the meeting is running. For external users, you have to copy the meeting link, paste it into an email and send it. This is very inconvenient. It would be good to permit (like you can in the invite to the meeting) simply type the email addresses of extenal users while being in a meeting to also invite them.

Allow Guests to Create New Contact Group. Having tested, they cannot do this at present.

When collaborating in a Team with certain people it would be nice if you could limit adding guests based on their domain. For example, I create a Team to collaborate with Contoso, I want to be able to add only people with the contoso.com domain. This will prevent accidental mixing up of different companies in a single Team.

I'd like to have the option to give a keyboard control to a guest user if the user have a Teams application installed. It worked a month ago but doesn't work anymore.
It works ok on Skype for Business

When having direct communications with other organizations, it's an annoyance that you have to toggle between your internal org and external. You need to be able to quickly communicate with everyone that you would normally communicate with in a normal day. If this is the Business solution MS is going with, it needs to meet the immediate and obvious business needs.

When a org-wide team is created, have an option to not automatically add guest accounts.

We have a org-wide company team for general chit chat, but don't want guests (eg: customers) to join/see this (for obvious reasons haha!)

The limitation of 5 Guest access maximum per paying user is absurd : On one hand you provide Free TEAMS and on the other hand if we want to create Teams with many external people it is blocked. At least we should not have a limit for external users that are Office 365 User on another tenant as they already pay for teams!!! Otherwise please provide a GUEST subscription that we can buy for our guests. I don't understand this limitation as we can share document without limitation with everyone!!!

Allow "Guests" to have more permissions, like being a co-owner and adding meetings

Since this is a collaborative platform, it would be great to have more information about guests who join. Can we have images and title/organization for guests please?

I suggest removing the need to flip between accounts to see news feed, chat, teams and channels for each account. Once you're logged to all your accounts you should be able to see all of these from the same area regardless what account they're part of. Flipping between accounts to see these things is inefficient and also is problematic with notifications.

When guest users try to access notebooks they receive error messages.

This should be fixed.