I really think the entire game should be about that rotating mechanic that's in level 27 onward. Up until that point, the game lacks complexity in it's choices of what to do, there's not that many options for you to even try and so the puzzles complete themselves. The puzzles also begin to get quite messy without making the game itself much more challenging. The rotation drastically adds to the amount of options, and so even if the puzzles don't have to be more challenging, they immediately become the most interesting part of the game.
 "Unpuzzle 2"){kind=icon}
 "MoneySeize"){kind=icon}