Try to level shadow too. Shadow cloack/VoB and especially CW are very good for a MNB, apart, shadow barrier passive is pretty cool.
You want to fight from afar or close combat?
Destro reach? The knockback is pretty useful.
Any plans on running Mages Guild skills? Volcanic rune, although situational can save your day and shooting star is a real nuke (but a little expensive for a Ulti)
I don't recommend Lotus Fan, due to the snare. Teleport strike does a very good stun and costs less.
If you want to run a Vamp, nananananana Batman is the best skill there and one of the top ultis in the game. Clouding swarm is very good with CW (in PVP is half a kill), while devouring swarm is perfect for sustain. Elusive mist is OK, though you have some good options as a NB, while drain Esence is literally pointless.
Remember to morph soul shred to sould tether asap. Stunning a group of 6 enemies when all of them are running to you is priceless