Hi Alex,
What you get to the right is a full inspector. This means that as you go to the right, you will encounter all sorts of objects. For an inspector, the first use case is to be able to identify the object you are looking at. Currently, we achieve it with an overall tab. That is why you see RTView on top.
I would love to get people working on widgets so that we can get smarter UIs, but at the moment I do not have another reasonable solution.
Related to the order of presentations. The inspector is quite sensitive because it is the most basic tool we have in the image. In your case, you see the playground as an easel and you want the RTView to show the view. But, when people look at an inspector, the most prominent use case is to look at the state.
In any case, you can just play with things and we learn from it. Changing the order is a simple matter of changing the numbers in the pragma. See here:
Cheers,
Doru