Likely right about the NN, since I base his coef off of the shuriken. I didn't read far enough for that one line mentioning his 'dps', which may come to mean a mix of his basic attacks and shuriken?
However my main concern was GS, I can confirm my current numbers ingame (imgur.com). If I peel away the current stuff I'm pretty close to you (imgur.com) but the exclusion of 5/4 10/8 on your list was very likely a mistake.
I'll be comparing gem boost layouts on PTS to my sheet whenever it comes online. I use summerhaas's specific numbers for the stats of the gem boosts rather than an approx.