History YMMV / AzurLane

*** PR5 adds ships that require ships from outside of the main four factions, which zigzags this trope. Brest and Chkalov require Iris Libre and Sardegna Empire respectively to start, but earlier PR's and War Archives can provide the necesary ships with some grinding, meaning that one does not have to rely on the build pools. Harbin, however, requires 160 Dragon Empery tech points. While the number may seem small, on top of being one of the smallest factions in the game (and the smallest if you count the Iris Libre and Vichiya Dominion as one faction), the vast majority of the faction consists of Lunar New Year event-exclusive characters, with only a small handful even available on a permanent basis. Chang Chun and Tai Yuan being added to the Guild Shop on May 2023 allieviated this issue.

** Trying to retrofit any Elite or above[[note]]at this moment, San Diego and Warspite[[/note]] ship can be a huge chore due to the amount of Gold Retrofit blueprints (an average of 10 for Elites, 20 for above) they need. It's not hard farming for cash (although Retrofits are rather expensive) or weapon plates, but unless if you collect enough ahead of time, you'll be stuck for weeks not being able to fully retrofit someone because you're still in Hard Mode trying to farm for said gold blueprints. Cruisers have it worse due to both kinds using the same blueprint type while battleships have it easier as very few refits require gold blueprints. [[note]]The game does give you two gold blueprints if you complete a respective chapter in Hard Mode and will give you a random gold blueprint weekly for playing Hard Mode for at least 5 days, and events will sometimes give you gold blueprints as well, but even then, the latter two might not give you blueprints you need.[[/note]].

** The full reveal of the ''[[VideoGame/TheIdolmaster iDOLM@STER]]'' collab has gotten a rather palpable cold reception from many players of the global version. Reasons can be summed up by the mostly younger playerbase [[SeinfeldIsUnfunny not understanding the original 765 cast's significance]] or how Bandai-Namco operates. While the opinion isn't entirely negative, bringing it up in some places will cause arguments. A lot of hay was also made over the decision to replace the Oathing mechanic for the Idolm@ster girls with a “Unifying” mechanic (which is really just Oathing by another name, mechanically). When [[ContractualPurity the reasoning]] behind this decision was explained to Western players, where "idol culture" [[ValuesDissonance simply doesn’t exist]] the same way it does in the East, their derision only intensified.

** Monarch doesn't get along with her half-sisters in the '' King George V'' class. Later on, King George V herself was added, who is voiced by Ayako Kawasumi, the seiyuu of Saber/King Arthur in the Nasuverse. Monarch's? Miyuki Sawashiro - Saber of Red/Mordred. Suddenly the enmity makes so much sense.

** In Music/{{Sabaton}}'s "Bismarck", the titular ship is described in the refrain as a "Beast made of Steel." Cue the introduction of Bismarck Zwei in 2023, sporting a massive, three-headed rigging she calls "Geryon" which, going by the theme of later release Ironblood kansen, comes the closest to such description.

* MagnificentBastard: Friedrich der Grosse certainly takes the cake by the time ''Rondo at Rainbow's End'' takes place. She [[spoiler: sets up a plan behind the Commander's back that gets the Royal Navy to cooperate with them to learn the truth of Scapa Flow; arranges for the Sakura Empire to show up with the pretense of cooperation; arranges for the other navies to target them by forcing the Commander to follow the Northern Parliament in their intent to attack Ironblood; successfully creates new Ironblood shipgirls based on the data stored in a Mirror Sea; draws in one of the main Sirens while the other navies are also encircling Scapa Flow -- just to set the table for the return of Bismarck and the declaration of Ironblood cutting ties with the Sirens -- and said plan snares the Siren in the middle of several combined fleets, while using the Mirror Sea to draw out her mainframe into the open and thus making her truly vulnerable for once; all while forcing the Sakura Empire into a corner, and forcing Akagi to act against her will towards the Sirens because they were left no other choice.]] By the end of the event, Friedrich bows out and claims her days of leading in the front are over [[spoiler: now that Bismarck is back]] and that she can go back do what she does best, to work away from the spotlight.

* GameBreakingBug: ''San Diego''s retrofit on the CN and JP servers also introduced a bug in regards to limit breaking her. As released, her retrofit did not require her to be fully limit broken, instead only requiring at least 2 out of the 3 maximum, whereas every single shipgirl's retrofit prior and after ''San Diego'' require them to be fully limit broken. However, performing the retrofit with only 2 limit breaks performed makes the final limit break impossible to perform post-refit, as dupes of herself can no longer be used for such a purpose, and there was no Universal limit breaking fodder that existed at the time that shared her post-remodel rarity. This was fixed post-patch, where the prerequisite for remodeling has been changed to require all 3 limit breaks, with compensation (all the retrofit mats and gold used thus far) given to those who had remodeled their ''San Diego'' with only 2 limit breaks done because their Sandys had to be rolled back to pre-retrofit to allow said players to do the final limit break.