these are really interesting points of discussion! i always just accepted that the caste system was biological in nature and the population of a particular caste was relative to their lifespan. that is, shorter lifespan = more common blood caste and vice versa. i suppose it’s similar to how insect colonies work (with one insect being queen and the others being workers or something?) but with more levels to it instead.

i also believe i remember something about psychic powers being more prevalent in warmer castes, so based off of that i sorta just assumed that cooler castes tend to be physically stronger the higher you go. but iirc i don’t think that’s ever stated?

another random thing: i really wish the brooding caverns and trials were expanded more in homestuck proper. whenever they mention trials i‘m literally not sure what to even imagine other than wrigglers going through the depths of hell lmfao

i love hearing takes on this tbh, troll biology is really fun to discuss.