First, it is the same old hornybait. Second, there are a couple of interesting designs, but they don't suit the game's theme. It's not a recent trend though. Has been happening since 2022.
Not really. Scantily clad bit titty girls, scantily clad small titty girls. The focus is that they are scantily clad. They don't have the sipgirl's rigging along them, nor any kind of militaresque uniform.
I don't like Sardegna Empire, so I don't care as much that Napoli is like that. The problem is that every other nation is also like that. From being unique and diverse, they now all look like scantily clad girls, with some rigging in the background. And background is basically the only way to distinguish them, cause there is no more unique uniforms. Only small pieces of fabric.
I fail to understand (of course I get it) why games like Azur Lane or Genshin don't have uniforms and outfits that change depending on occasion and environment. It wouldn't be all that much work, and would allow to easily keep the fanservice for those interested in it without sacrificing all more serious and believable outfits.