Introducing Microsoft Teams displays

I want this to work:

• in a boardroom.  Specifically the 'chair' of a board meeting doesn't sit in front of the Teams Meeting Room Console, but that's the only place to see who is raising their hand (the large display on the wall only shows 'one or more hands were raised').  This would allow the 'chair' to see who is raising their hand, without needing to run Teams (Audio Off) on their laptop.
• in dozens of tiny meeting rooms (for 1-3 people), shared by anyone.  This allows deskless staff to jump on a Teams call without needing to bring a laptop or smartphone to the room (some staff don't have such devices assigned to their role).
• as a personal device in every closed-door office (likely not open-space cubicles, but possibly if the cost can go down)

The following issues are preventing me:

1. For a boardroom or meeting room (shared space setting) there's no settings to auto-sign out after a configured timeout, a prompt to sign out after a meeting ends, or even just a one-tap Sign out button.  You can't put this in a shared space if there's a risk of users leaving them room with their account still signed in. 
2. It takes 3 taps to Sign out and even 2 taps to do a Hot desk (which doesn't offer the immediacy of Sign out) 
3. You can bypass the PIN lock screen by tapping Hot desk, then cancelling out of signing in 
4. Lenovo's power outlet is too big to easily fit in a recessed outlet (the kind you often find integrated in a board room / meeting room table)
5. Lenovo's device runs on Android 8.  Really?  In an enterprise environment where MDM policies block you from using old OSes for security reasons?  More importantly, a device like this needs to be like an IP phone and last for 6-10 years.  Running on Android 8 (which likely means it will never be updated) suggests a short, expensive lifecycle for the device.
6. Lenovo's device only offers Bluetooth for a headset when a phono jack would allow a simple wired connection, such as inexpensive earbuds to be used

You're on to something.  I want to make it work.  It needs much refinement to sell me.