That sounds like a nightmare, not an improvement. Really, think about it. It's the same shit as "self driving" cars that need continuous human monitoring. You're taking an relatively engaging task and replacing it with a mind-numbing slog that humans are particularly bad at.
Not to mention the skill of being able to "check work" usually flows from deep experience of "doing work."
> It's way faster to check if a Sudoku puzzle is correct than it is to solve the Sudoku puzzle.
Yeah, and which of those tasks do humans choose to do? I don't see many "100 Solved Sudoku Puzzles To Check" books in the bookstore.