[3.0] Raider - Poison Blade Flurry

Re darkray vectors - I looked at them too, but it's really one unique too far. I think you would need to drop something else to make room for them unless you had really good rings.

Vaal pact - the life on hit coupled with our very high attack speed kind of fills in the gap here.
Don't have a lot of life regen anyway though so it's not a terrible choice. The 'refill life flasks' pantheon helps with lab if you take it too.

I retired my character, it was pretty effective, but a little squishy, and blade flurry range even with inc aoe wasn't great. I'm not very good at guardians so failed at chimera (Chimera itself is easy, the third stage adds with aspect of the snake absolutely wrecked me) and phoenix is tough with low health, non instant leech and having to be in shotgun range. So I sold off my gear while Mathil has pushed all the prices up!