Even if there won't be a modern UWP app for Teams, the Win32 app should be available through the Microsoft Store so it is discoverable by Windows 10 users (that's where I looked first, with no luck of course).

When running a Teams Meeting on my Surface Pro i7 (2017), my screen-sharing, video meeting used about 30-32% of my CPU constantly. This seems different than Skype for Business. My battery life went from 100% to 35% over the 2 hour meeting.

on the settings there needs to be something for enterprise data retention. e.g. after 60 or 90 days data is purged off, or conversations roll off.

Students are using the Teams app on their mobile devices. However, they are not able to utilize Immersive Reader on posts and chats. Please add this to the application so that all students have equitable access to information and learning.

Participants should have the capability to zoom in on the user who's sharing their screen with the participants.
this functionality is available on Skype for business, it's called Actual Size / Windows Fit

According to iOS Battery report, Teams is responsible for 24% of my battery usage. I am not actively running or using the program, so I assume this is related to background tasks / notifications.

Ability to localise dates - In at least AU and UK we use DD/MM - its becomes confusing quickly when half the dates are in local and the other half are in US format

Advance whiteboard features would add massive value to remote teams like icon & photo finder, wireframes templates, idea voting,web page capture or via URL, prebuilt templates (eg.Strategy, Agile, ideation, mind maps, sixsigma tools...)... A good inspiration can be found in Realtimeboard or Mural.

You should have a "what's changed" overlay everytime it updates, or at least a pinned topic on this page with a summary of the changelogs.
Given that it is a new product, some updates might include the missing feature that a team is waiting to switch over to Teams and it would be good to be able to discover this.

Guests invited to meetings currently cannot view meeting recordings. All meeting invitees should be able to access the meeting recording.

Currently you can only view your calendar for the current week in the mobile app. Please add option to view all calendar events beyond 1 week.

When trying to create a team, an Owner of a 365 Group can be prompted to add Teams to that Group, but only once. After adding the first group they own, they are not prompted again. There is also no way to manually provision this service to existing Groups in the Admin center.

When I am typing a message, whether in chat or channel, the conversation window scrolls up for as long as I'm typing for. A message this long will scroll up a few dozen lines, while a much longer message will scroll to the beginning of the conversation.

Microsoft Team currently doesn't run on Surface Hub :-(
when I clicked Join Online it's asking me to download the app however the app is not compatible with Surface Hub.

For us and our customers it would be helpful to be able to filter the results in the call history. At the moment, this list is just getting longer and longer. So, I'd like to be able to sort and filter by type (incomming, outgoing, missed), date or source/destination number.

We create our Teams as private by default since they are about the clients we work with. We are okay with everyone at the company knowing that these Teams exist, but we don't want them to be able to join them without permission.

The problem we're having is that people keeping asking 'does a Team exist for client X?' and there is no easy way to answer that question.

We'd like a way to search for private teams so that folks can request to join them.

During an ad-hoc channel meeting. Have the ability to use tags or distribution lists to invite while in meeting.

Rather than having to run the To-Do app separately make it a tab in Teams as most to-do items relate to work in Teams

scroll lag : scrolling performance (i.e. to previous messages in a chat/channel) is much worse than expected - messages don't render for a noticeable period of time