Non-western citizenship, yes that's good to have. A BRICS country, well, not really except Brazil:
-China, doesn't allow dual citizenship, treats citizens like serfs, and considers all chinese even those living abroad under their control. Has set up "police stations" around the world and threatened chinese nationals living abroad if they dont act like the chinese government likes. More likely than the West to︀ go crazy with citizenship based taxation.
-India, doesn't allow dual citizenship, not as authoritarian as︁ China, but very difficult bureaucracy and comes up with new crazy taxes and regulations all︂ the time, like recently they imposed 20% tax on remittances sent from India abroad. Might︃ very well start milking Indians abroad.
-South Africa, does allow dual citizenship, but is a︄ disastrously mismanaged country with high taxes. Have a friend who has dual EU / South︅ African citizenship, and is resigning his South African one for fear of citizenship based taxation.︆
-Russia, think dual citizenship is possible but as a Russian citizen you are under the︇ thumb of a mafia state who can send you to war, and you are subject︈ to sanctions impacting bank account opening or buying a Caribbean passport and lots of other︉ stuff. Also Russia makes it difficult to renounce citizenship.
-Brazil, ok they got a crazy︊ lefty president at the moment, but it is a decent passport to have. Not likely︋ to impose citizenship based taxation, but they do make it difficult for Brazilians to escape︌ the tax net, by requiring a declaration of departure when leaving and another one a︍ year later with documentation and stuff.