I didnt had much time to analyze your vid in depth, nor i am claiming to be smartest NIN out there.

There is alot of discussion about Dot opening VS DE opening, so 2 diffirent persons could tell u eighter way is better

Only thing that i noticed was buffing(IR/BfB) before initial attack wich i personally dont like, other thing is starting your combo 5 sec before Suiton, its cool but u can notice next Trick Attack ur doing Shadow Fang+Dancing Edge becouse your DE is getting down, where u could push SF+AEOL for more potency in that 10 sec window. U can achieve that by actiavating Suiton and then muving your combo past DE>Spinning before using TA itself then TA>ShadowFang>Spin>>AEOL, But then its around 6 sec loss on your next TA timer.
Secondly you could try to rework your starter and pull earlier starting with DoTs(around 10sec after Huton) thats what im using (except when i have WAR starting with debuff) then your next TA will comeout nicely on timers with SF+AEOL and even push in Multi in that 10sec window.
But as i said, opinions are diffirent for bouth openers, there is propably as many openers as there are ninjas, and whatever opener u use it wont change your DPS that much , you hoever should take some time and try few of them and see wich one is best for you.
For me best opener is one that sets your timers (buff/dots) nicely for second TA and foward.

Other than that your sustain is good, slight cut/drops of DoTs below 2 sec but thats mostly becouse of Mudra cast times and thats unfortunetly thing u cant improve, i have same problem and i see my DPS drop every mudra cast by little and im hitting around your numbers on dummie with similar eqips.

So my guess would be mudras. But maybe someone else will notice something.