Some questions to Microsoft Teams Room hardware and Office 365 tenant setup

I understand that Microsoft Teams Room (MTR) is best implemented with dedicated hardware running the specific Windows 10 IoT image and supported periphery, i.e. Logitech Rally (let's call the whole of it "MTR system").

I have some questions for which I have seen an answer to in the documentation I found. I'd appreciate any feedback from you. Thanks in advance.

• I believe that an MTR system only makes sense with the Office 365 Meeting Room (MR) licenses to be added to the Office 365 tenant. Correct?
• The MTR system is just that. Its' running a special version of a Teams client, limited to calling and video conferencing. It cannot be used for any other function, either Teams features or completely different applications like on any other Windows 10 PC. Correct? 
• The MR license setup is similar to a resource (room). For example, it will have AutoAccept functionality like any Office 365 room resource and act like a resource. Correct? Is it also scheduled like a resource? I've seen examples where the meeting room was added as normal attendee to meetings and not as a room (hence my question for AutoAccept functionality).
• If the Office 365 tenant only uses Business Essentials (BE) licenses for it's users, I can add the MR license to it, just for the meeting room. Any other BE user would not need to upgrade to E1 or E3, as long as they do not need PSTN (telephony). Correct? 
• Yet, the MR license would allow the MTR system to connect to the public telephony network via Direct Connect. Correct?
• External attendees would connect to the video conference either via Teams app, or via Web connection. This works with standard Teams video conferences between PC's. Does it also work together with an MTR system?
• Once I setup an MTR system, can it be used to connect to other meeting types, like Zoom for example?
• Can I run an MTR system with a standard Office 365 BE license, instead an MR license? I know that I would loose functionality, like meeting AutoAccept and such. Are there other consequences?

Thanks for your help

Dan