I have a feeling a lot of the issues I had with the game came from the localization. I read a different guy was responsible for the localization this time around, and I noticed that a lot of the names are pun-based, and not in the good way. They weren't just groan-worthy, but they also broke the immersion. This one is interesting, because I actually love the pun names in Ace Attorney, but not in Layton. It feels like the AA puns are much less on the nose.
And the puns in Katrielle Layton weren't limited to the names. About every time Sherl opened his mouth, a dog-related pun came our, and he didn't even really seem to be the punny type.
On top of that, a lot of the characters, especially those from Scotland Yard, were given heavy accents in text. I don't mind having personality in the character dialogues, but the heavy accents sometimes made it hard to follow (You'd have to very consciously read certain words) and it was also a bit inconsistent at times.
But my issues are not limited to the localization. I think the shorter mystery format doesn't do the game well. I liked the more epic adventure from Hershel more than the urban 'mysteries'. I struggle to call them mysteries, because I don't recall having any mystery I didn't get beforehand aside from...
...the one with the Myna bird pooping on the film. There was no indication that the Myna bird was badly trained and would just poop all over the place. Sure, it was clear the bird was gonna be involved in some way, but specifically pooping on the film, no...
It's also weird how the game has a game mechanic where you have to drop in hints like pieces of a mosaic puzzle to create a full solution, implying as if you're the one who has to solve the mystery, but in the end, you don't actually have to do anything. The dragging and dropping of hints is entirely cosmetic and gives you a mixed signal until you later learn to ignore it altogether.
I also wasn't too huge a fan of the repetitive writing, where Katrielle always mentions her "miraculous intuition" (paraphrased), Sherl putting that into question, and Butler-guy always praising Katrielle. This made the characters seem rather two-dimensional.
And as a result, this also made the final reveal lack a bit of impact. "This flat character actually has depth that hasn't been hinted at at all!"
That said, it's not like Hershel didn't have his fair share of "A true gentleman, bla bla bla", but it always felt like it had a bit more depth than just that, whereas I don't feel this with Katrielle.
Aaaand finally, I could've sworn that this game had a lot more unfair puzzles. Heck, one of them is even incorrectly localized and unfairly made me lose Picarats. But a lot of them felt pretty unfair. A lot of the puzzles asking for a numerical answer often were a trick puzzle... but since you'd have to give an exact numerical answer, you'd just have to guess what the puzzle maker wanted to hear, even if you understood the trick. For example...
(Paraphrased) "How many cars will it take to cause a traffic jam of several hours?" Well, the trick is of course that you shouldn't
account for all cars in the traffic jam, but only the cars in the front. I understand the trick, but I now have to guess what the puzzle maker wants to hear. Is the answer 2 because it's a two-laned road? Is the answer 1, because it only takes 1 car to be sideways for that? Is the answer 0, because it could also be a fallen-over tree?
The answer apparently was 1, which doesn't paint a realistic picture at all. It shows a car just casually parked sideways on the middle of a highway...
Another one that is numerically correct, but not realistic or even feasible at all despite being a puzzle of logic was one that asked how many sandbags it takes to cross a river. In the end, the trick was that you could also lift the bags you had previously put in the water behind you and repurpose them. Even though, if a river is so wild that you'd need to build a bridge out of sandbags, you couldn't feasibly lift the sandbags from the water. Especially not at parts where the river was 3 sandbags deep. You'd have to almost go diving to retrieve that sandbag from the river bottom, at which point, a bridge is pointless.
Whew. This comment get a bit longer than I had intended it to be, but these are about all the qualms I have with the game. Don't get me wrong, I enjoyed it and didn't regret my purchase, but it didn't quite scratch that Layton itch I had ever since the original double trilogy