I respect people's different opinions on this, but personally I like the option of playing as a monk, even if it is a shaolin-style monk. They could end up being a poorly designed cliche, but so could all the other classes if they're badly designed, and with Obsidian's track record I'm interested to see what they do with it.
To me, the Monk would work if it's an ascetic character who's based around self-reflection/self-improvement/self-denial, differing from the Priest who's more about religious fervour and zealotry. If it is that the Monk eschews armour and weapons, I would think that was more about the idea of self-reliance, and about forgoing material things in order to focus on the training of the soul, which with enough training and dedication powers them to superhuman feats of strength and endurance. Also, I would think they would do this even if it wasn't always the most efficient way of fighting, as they would be focussed on more philosophical and lofty goals than the more prosaic classes like Warriors or Rogues, even to their immediate detriment.
Also, at the risk of muddying my argument - I think people overrate plate armour, and armour in general, in these types of games. I really enjoy the armoured knight archetype in games, but historically armour was something that was situationally very useful, and at other times a real hinderance. I think we've just got too used to the idea of armour adding to an "armour value" and being a great bonus, but really it was great up until the moment when something could go through it, and then it was just a hinderance. I'm not particularly arguing for semi-naked monks or chainmail bikinis, but as much as "reality" matters in these sorts of thing, I think people too often assume that running around on an adventure clad head to foot in plate and mail is more "realistic" than it perhaps would be.
Whether Monks are "Asian" or not doesn't really bother me, although as a white guy who lives in England, personally I like to see more diversity in these games. I think the idea of a handful of outlandish characters who've arrived from across the water, and the potential for religious/philosophical/cultural clashes they bring are something Obsidian could portray in a really interesting way. If I want to be surrounded by white people who talk like they're in the middle ages I can just go to the local Asda.