Query and Analytics query context box UI could be improved

IMO the Query Context picker should open with Default as the default schema. It should not say "query context" as a choice - it should be LABELED as being that, and should only offer a set of actual Analytics scopes as options. It should default to Default! Otherwise one has what you see above as their first impression of the Analytics UI, i.e., that will be their out-of-box experience after loading one of the sample buckets.