The amount of vision granted was definitely a slight oversight; the tiles were created before the puzzles were, meaning that rather than making sure to allocate proper screen space to the puzzle, they just took up however much space. Although I personally didn't see this to be too much of a problem, simply because resetting isn't that punishing, and for the final level to be added, the tiles would have to be super tiny if they were to all fit on-screen.
I will keep this in mind, however, potentially offering a button to toggle the zoom distance if I decide to make a puzzle game like this in the future. ^^