The reason you should get the new Dharma expansion is not because of these policies or the minor tweaks it introduces to Europa Universalis IV. Rather, because it transforms the subcontinent of India into a much more interesting region. With the specific caste systems and the trading overhaul, the area is much more alive for those who play as natives or those who play as foreign trade empires.
Regalia: Of Men and Monarchs isn't a stand-out game in any means. The combat is challenging but achievable and there won't be any fights that you will tell your grandkids about. The plot is humorous and the characters are enjoyable, but neither the narrative nor the characters will set the world alight. What Regalia: Of Men and Monarchs is though, is a JRPG that stands on its own two feet, and despite taking many influences and using certain generic conventions, it manages to carve its own identity.
Developer Tea Powered Games has some great ideas here, and I can't help but hope that its next title be something like a murder mystery game! But if you do fancy sliding into the shoes of a struggling writer, you could do worse than play Dialogue: A Writer's Story.
Muv-Luv Alternative is a great title within the genre, as it explores some really interesting sci-fi and political ideas. But at the end of the day you are mainly along for the ride for unsavoury reasons, and that can sometimes eat into the seriousness of the plot. I mean, just look at those uniforms!