i have the home beta too
to answer all you questions
They should really add the ability of viewing movies fullscreen (you should be able to stand close to the screen then press a button and view the movie fullscreen).
They Have exactly that
How do you communicate with others exactly?
Do you have to type everything, and then it appears above your head in a bubble?
Or can you just turn on your headset and run around shouting at people?
you can type or run around shouting...
![](http://s4.ytimg.com/vi/7Rm_UgjEwo4/default.jpg)