Yes, you can move the chat box. Just click on the "General" tab of the chat window and you can drag the window anywhere you like. To resize it just click on the little triangle in the bottom right corner of the chat window and drag it to the size you want. If you change the group window into an Operation frame (main menu > preferences > user interface > scroll down to operation frames) you can adjust the size of the health bars and also lock/unlock the operation frame window to move it around where you want on your screen. Can't really do much else for now. Better than nothing though.

Let's see if I remember properly from beta. If you hit M to open your map on the bottom right hand side you will see "World Map" if there is more than one instance of the zone you are in it will have a drop down menu that will allow you to see/select the instance you would like to switch to (the one you see before you expand the drop down is the version you are currently in.) The Guild window and Friends list will also inform you what version of a zone people are in. Brain is foggy this early so this may be totally false and I apologize if it is indeed, but I believe you can right click on party members to switch to their instance. Also, "I think" if you happen to be in a different instance than party members when they talk in group it will show their instance after their name in chat? (Again, I might have been dreaming seeing that before and apologize if I am wrong.) Hope that helps some!