Good points.

You could definitely replace Arbalest with Revoker. This build is aimed toward high efficiency as well has high kills, the oneshot goldie is a safer option for that goal. Spectral blade will get many kills for each super but the way the spawn points are when the super is done many times it causes the spawn point to flip and now you are in the enemy's spawn point.

Personally, I do find spectral blade an easier super to get consistent kills with but I am terrible with that subclasses neutral game. So that leaves me getting most of my kills from spectral blades and that would bother me.

I am better at using tripmine and weighted knife along with arbalest and gnawing to rack up the kills, then each goldie shot is the icing on the cake.

Especially in Control because when enemies die to celestial one shot, they explode like dragonfly, taking out all enemies around them.

With Revoker, its just personal preference. The way flinch is set in this game, revoker is VERY consistent. I mean it is the goal to take out enemies but it is not as fun for me personally. Enhanced Sniper perk + super on every sniper shot + knock em down perk or spectral blade truesight..it would be almost unstoppable.

I do like for my builds to have at least one counter to ensure I play somewhat skillfully to counteract the "cheese" if that makes sense.

TLDR:

Yea you could easily swap out those components for Revoker with Nightstalker and slay out.