well obviously its more a suggestion or some sort only the mighty toady an answer correctly... so lets see this thread more as an mindwrapping discussion.
but my question is how mighty will the casts be?
like is it possible to assign more than just unseeable visuals to them.
as project experiment i brought some elves *points at the +elf cages (elf bone)+ in the corner*
now let us guess this three elfs are of 3 different casts(well obviously 6 with genders ut the small gender tag and maybe beard variants will be left out)
now say we got wood elves, high elves and dark elves. normaly they are like than creature just different casts.
wood elves will get a brown skin and maybe darker hair
high elves will get a light skin and lighter hair (blondes and stuff. nuff said) they are more bengin
dark elves obviosly get a black sin, whit air and red eyes, also they are evil and likes fighting
sois this possible in the first place to have 3 races (and 2 genders) within one creature?
and now we go a step further: 3 entities
the wood elves are just like the elves we know: dragon and dwarf devouring tree hugging monsters with hate for anything sentient
now we also got casts for dark elves: they build mountain homes just as we know for dwarfs, they also very fond of the metalindustris and able to create steel, but beside this they are evil, bloodthurstie and like slavery as goblins, just one size bigger and a damblock weaker
the high elfes get even more interesting as they may occure within the wood elf socitiy, or among humans, or likly to build their very own nation just as the humes do
so it could be interesting if you can load different casts into an entity, also different entitys among a cast so we got a classical n-m.
also te different entitys shold have different versions of love and lead settings:
wood elves are lead by a bunch of druids, but they breed with whateer they like.. this means their lover can change seasonly and they never get into a merriage.
the high elves among humans get lead by a king or rebublic or democrazy (!) ... well whatever the ghumans got set, but their love is different, due to the immortality they are not very fond if their mate get killed and may take a new... maybe even an human, this makes half elf breeding interesting ^^
well the dark eves are different, they either follow a demon like goblins, or a panteon, if the last ocurs they create a m(p)atriarchat, its just like a king/queen system with the difference only female lines inherit, and also they form harems. both is depending on the gender of their demon or the god they follow: a male demon force a patriarhat and the males get their bunch of lovers, but if the queen follows a female god they will do it otherwise
well the last part i just edit in and deserve a suggestion i think ^^
now the fun part all along this is to see reactions in the world gen and legends: some wood elves get taken other by dark elves, which got some enslaved (or snatched) high elves with them and settle down in the retreat... with the gen thingie, its like simlife just more awesome