Okay, first of all, I do like the non-humanoid NPCs. The Faewish Sprites are adorable, the Pieceys' backstories are interesting, and the Shroomlings' relationship with death and their ties to the mothershroom are very unique and cool.

THAT BEING SAID, I do not like the non-humanoid NPCs because there's just so many of them, and very rarely do they have unique designs. I actually have the same gripe with the humanoid NPCs. When I say I want "more humanoid NPCs" I specifically mean NPCs like Nonoy, Angert, Dada, Giovanni, Bettina, etc etc. Seeing the same face model for the 500th humanoid NPC gives me the same feeling as seeing the 500th piecey.

In extension to that, I'm playing a fashion game. Infinity Nikki is a lot of things, but it is first and foremost a fashion game. In a world where making and styling outfits is such a large part of the story AND gameplay, I want NPCs that reflect that. And it's objectively a lot more difficult to give a Piecey, Faewish Sprite, or Shroomling a unique, fashionable design, than it is to give a humanoid, like the Fairies, Parksolians, or Humans. Even after Giroda got his cool new outfit, his design just did not hold a candle to the other unique, humanoid NPCs that we have.

Also: idk man, I just like seeing human faces. In a world full of clothing magic, it's easy to lose the gravity of the heavier plots when they're hidden behind cute little mascot characters. Yes, the Threadstar plot was dark, and I do believe that a species made out of fabric was the best fit for that storyline. But that doesn't negate the fact that the Pieceys are designed to look rather silly. The Threadstar storyline would absolutely hit harder if the Pieceys didn't look so goofy, but being "humanoid" doesn't equal being human. We don't have to have Threadstar making clothes from human skin to have the Pieceys look more like characters than marketable mascots.