https://github.com/SpadesNeil/VOREstation/pull/467 I put up a PR.
Also, the old crate puzzle was quick and it was easy but still random chance of failure. The new ones... once you get the method down, you can get a pretty good chance (near-certain, in fact) of getting it open. If anything, going back to the old puzzle would push them into "meh" territory, they're just a thing to crack open and roll the dice at getting some goodies, whereas the new puzzle feels more like "prizes await you if only you feel like putting some effort in".
At that point the biggest concern is that the loot might not be worth the few minutes of time it takes to crack the code (only a 1% chance of getting a mystery box, but 150 cargo points will let you just order one if security aren't looking, which isn't much at all if you concentrate on mining plasma), but balancing the loot is an entirely different issue.