We’re currently working on defining a compact mode experience. I will post more details when we have more to share.
The team is working on #2 (and has been for awhile). We will update as soon as we have more news.
It's unbelievable that Federation wasn't part of this. It's been a part of Lync/SFB since pretty much day one. Honestly, whoever designed this product should be looking for a new job. If you intend to replace S4B with Teams it must do 100% of what S4B does plus the new features. It'd be like Ford designing a new car and forgetting to include tires.