configureQueryAnalyzer output should tell if a sampled operation was a part of a transaction and the details of the transaction because, 
 
1 - it would give valuable insights into if transactions were occuring and if so what namespaces are involved. It would help customer trying to see if their datamodel is appropriate as well so they can get ahead of potential schema changes before implementing sharding decisions
2 - they could anticipate cross shard transactions, esp with collections that are going to have different shard keys