Chakotay should have been played by a Native American actor, and his culture should have been accurately based on one particular tribe instead of being this weird mishmash.
Kor
I agree that an Amerindian should be played by one. I don't like whitewashing. (John Wayne as Genghis Khan, worse example.)
However, for the opposing view some tribes are so...damaged that piecing them back together is an impossible task. The tribes of California for example. This is a future where the indigenous people of North American have melded into one for survival as an identity. It is a valid, if not terribly optimistic projection.