Donald Draper wrote:
My only complaint about the Klingons is we did not see enough of them.
I found these Klingons to be much more menacing than the "blood and honor pontificating race" they became in TNG and later series. Uhura tried to "connect" with them on that level, and, well... we know how that worked out.
I also liked the use of piercings/jewelry. I can imagine that those would be used to signify rank or enemy kills.