RuleMaster said:
The proposed list consists of 31 types and I neither know, if this list is comprehensive, nor if the mechanical differences are enough to justify the extra work.
What proposed list? The list of words I posted was an off-topic reference to answer Roman's question, not a rule proposal.
RuleMaster said:
Also, I don't understand, why is mammalian too broad, but invertebrate isn't? Is this the human-centric view? If yes, is this in a D&D-universe appropriate?
Yes, it's the humanocentric view. And as far as precedent goes, it's totally appropriate in D&D.
Look, you
already have it.
Humanoid (Dwarf): Deep Dwarf, Duergar, Hill Dwarf, Mountain Dwarf
Humanoid (Elf): Aquatic Elf, Dark Elf, Grey Elf, High Elf, Wild Elf, Wood Elf, and the various Half-Elves
Humanoid (Gnome): Deep Gnome, Forest Gnome, Rock Gnome
Humanoid (Goblinoid): Bugbear, Goblin, Hobgoblin
Humanoid (Halfling): Deep Halfling, Lightfoot Halfling, Tallfellow Halfling
Humanoid (Human): Human
Humanoid (Reptilian): Kobold, Lizardfolk, Troglodyte
See? For humanoid mammals, you have nearly one subtype per race, the only exception being goblinkin with one subtype for the whole species.
Now, for reptilian humanoids, you have just one subtype. If you make a turtlefolk humanoid, they'll have the Reptilian subtype, too. Like will have the Snakefolk and the Gatorfolk. All are Reptilians. No need to be more precise.
Humans do not have any modifiers. They don't have a size bonus or penalty to attack and AC, or to Hide, or to Grapple; because their size is the Medium size. The whole system is scalled after humans. They do not have racial modifiers to this or that ability scores, because they have the average ability scores. The whole system is scalled after humans.
You could have had Humanoid (Anthropoid) and have all elves, gnomes, dwarves, halflings, orcs, goblins, and humans fall in that camp. Or even Humanoid (Mammalian).
But you don't.
On the other hand, you have Humanoid (Reptilian). And if the core-rules feature humanoid birds, you would also have Humanoid (Avian).
You do not even have Humanoid (Piscean) or (Amphibian) because they'll just use the Aquatic subtype instead.
And you don't have invertebrate humanoids because they wouldn't be humanoid to begin with.