I just find it odd that people respond as if
the caricature Fu Man Chu original 60's version of Mandarin was expected. Was the only serious route possible.
The character has evolved like others over the decades. It may be that the Chinese co-financing is to blame for us getting a Mandarin in name only. They may have had a clause saying that in no form will a Chinese man be the serious bad guy. Shame really cause The Mandarin deserved to be taken seriously and the notion that Killian was also actually Mandarin, while working within the movie, is just weak.