I believe the Vietnamese Cao Dai variation of Roman Catholicism was considered by Rome to not be heretical, despite the Asian influences of ancestor worship and the interesting beatification of Victor Hugo as a saint by Cao Dai adherents, as well as their belief that that the God of Christians and Jews is also the Supreme Being of the Buddhists, and the Brahmnan of the Hindu.
If that doesn't quite include the vodun/voodoo practices of human sacrifice, it's at least balanced by at least some influences of Asian animism and nits. And if Rome hasn't yet accepted West African influences into their theology, there's an awful wide ground between Russian Orthodoxy and Cao Daism, and I wouldn't take any bets as to what might be accepted next.
