This idea has been developed and deployed to Canvas
When a student submits a Classic Quiz that is a mix of auto-graded and manually graded question types, that quiz appears in gradebook with the "needs grading" icon. With a New Quiz, a score for just the auto-graded questions appears in gradebook with no obvious indication that the quiz needs manual attention.
The New Quizzes behavior is confusing. And especially in large courses with multiple graders, it leads to grading errors. Instructors and teaching assistants have observed that with New Quizzes, they have to guess which quizzes need additional attention based on the score displayed. And students have repeatedly inquired to find out why their quiz scores have not been updated to reflect their work.
Please fix this behavior. New Quizzes need to unambiguously indicate in gradebook when they need additional attention from a grader. Anything less makes New Quizzes unusable for a very common use case.