Flavor wise, they exist to port low-to-mid grade Wuxia heroes into the predominantly European fantasy worlds of D&D, and that's fine by itself.

A nitpick, though. In 5E they buffed monks by giving DEX to damage and a thematically appropriate weapon (shortsword). Yet they forgot to buff (in my opinion) the biggest ribbon they exist for, the youth extension clause (a.k.a. Timeless Body). If implemented properly for a high-wuxia staple power, it should have been the current one PLUS the Druid's lifespan expansion in a single package...