The caste system allegedly prominent in Raam doesn’t make sense. Perhaps I don’t have the big brain of people for whom it makes sense, but to me having a caste system while also having a ubiquitous institution of slavery undermines the reason for existence of castes.
With a caste system, caste identification cannot be erased and status is dependant on caste. What then of an enslaved highborn? A high-born person who becomes enslaved would be in an ambiguous position, disrupting the integrity of both the caste and the slavery system.
Worse, managing two different systems of social stratification might be an unnecessary burden. It would require significant administrative resources to maintain a caste system on top of a system of slavery.
Of course, there are people that say that the caste system of Raam is “problematic” due to the “cultural appropriation” that it represents of caste systems in places like India. To me, this is an irrelevancy to the in-setting problem that the caste system of Raam is not fit for purpose. And for what it’s worth, in the original campaign setting boxed set, there is not even a hint that Raam might have a caste system. Indeed, most of the “problematic” content, whatever the reasons for them, come from the later products such as the revised campaign setting. As an originalist, I disavow.
Caste + institution of slavery are an unlikely pair. If someone wanted to rid Raam of references to caste systems, this would be the right reason to do it.