I hate looking at Hemo builds. I'm not too bad at judging combat and Assassination, but when I look at someone in the Sub tree, all I can see is three tiers of "Oh god kill me now why did I take this?".
That being said, the only thing I saw in a quick look (see above), was 1 extra point in lightning reflexes. Put an extra point in sword spec (or whatever spec you want to use).
Again, my answers are typically only valid in the context of PvE, so I may be totally off base here.