Tun Kai Poh
Hero
I said this over in the thread about Crawford and his tweets on alignment, but I feel the more they move away from the alignment system, the less likely there will be another Asian-themed book. The structure and honor codes and all that seem more tied to alignments than in more generic settings. So unless they come up with a good replacement for an Eastern theme, I think this has gone way to the back of the line.
Well there are a lot of games that do D&D-style fantasy but don't use D&D-style alignment rules - and I can think of dozens of ways to run games set in fantastic settings inspired by Asian regions that don't involve "honour" the way it's been romanticised by OA or L5R (sorry L5R old friend, your concept of Samurai honour is a mess and has more in common with Tojo's Japan than a lot of historical lived experience...) so that isn't really a reason not to try.
Anyway. Religion and philosophy and how people structure their ethical codes has always been more complex and interesting in our world than how the Alignment grid handles it - whether we're talking about Middle Ages Catholic France, Sassanian Persia, Yuan Dynasty China or Warring States Japan. I personally prefer to group NPCs by factions and overlapping belief systems than by alignment.