Thanks for the feedback!
Some thoughts in answer to the you questions:
1: I saw from the issue tracker you found the answer to question 1 :)
For those of you that are interested the answer is if you select the PanoramaItem then in Common Properties you have the option to set Orientation to Vertical or Horizontal. Set it to Horizontal and you can set the width of the individual PanoramaItem.
2: You have a couple of options here regarding editing and viewing PanoramaItems I've added a short page that looks at that.
3: We didn't go to that level of detail for this release. Talking about text though ;) we did include the WP7fonts sizes and styles as Sketch styles that can be applied easily to your fonts. eg. Select a TextBlock, right click, choose edit style, apply
resource and you'll be able to apply the Phone font resources.
4: Noted :)