I'm pretty happy with the way this is defined atm. See org.hibernate.query.internal.ConcreteSqmSelectQueryPlan#determineRowTransformer -> https://github.com/sebersole/hibernate-core/blob/wip/6.0/hibernate-core/src/main/java/org/hibernate/query/internal/ConcreteSqmSelectQueryPlan.java#L65

Let's use that as a starting point for any additional discussions