The Inspector's Console should slide into view similar to the way the search results do, instead of being segregated in a separate panel. This way you would be able to see, e.g., the DOM tree while typing in a JS expression.
<rdar://problem/5751142>
The new Inspector UI (bug 17773) should fix this.
(In reply to comment #2) > The new Inspector UI (bug 17773) should fix this. And, indeed, it did.