Reading between the lines from today's RAQ entry on triggerbots + dervish:

The spell will trigger from one of the Triggerbots, Manifesting two Dervishes and disabling your weapons. The spell cannot then trigger a second time because you no longer have that spell, so it fails to trigger from the second triggerbot's location.

Because the spell only creates two minions and does not deal any damage, the damage penalty on the passive skill that grants the triggerbots has no interaction with this skill.

This wording implies that the only reason we don't get 4 dervishes is because the first trigger removes the weapon. This isn't the case for spectral spirits, which simply triggers when equipping the essenced weapon. Thus, triggerbots would allow us to get 6 spectral spirits instead of 3.

Spectral spirits are always at the verge of being decent. They're a very interesting minion: immortal, fast, fast hitting, and can be affected by 6 support skills. Their drawback is their low base damage.

So, sure, we can get 6 of those, but... On saboteur? Why would you want to do that on an ascendancy that has nothing to do with minions? Well... Enter pyroclast mine:

Each Mine Adds (1-12) to (2-18) Fire Damage to Hits against Enemies near it, up to a maximum of (64-601) to (96-901)

With enough investment in mine aura effect (which the sabo gets in spades) and levels on a corrupted Victario's influence, this supplies more than enough base damage to carry the minion.

So the plan is to alternate casting minefield + swift + pyroclast, and on another setup high impact mine + minefield + SRS + feeding frenzy for some more minion support (note that high impact mine provides chance to double damage). We'd never actually detonate the mines, just leave them there for the aura.

Here's an extremely rough PoB for the idea. It's missing most of the gear, it's level 100, and probably has nonsense config enabled, but it's just to explore the general shape of the build.

And yeah, Vorana's is a total meme but I think it's funny that you get six of them, plus they can intimidate and expose, so there's that. I would probably use a decent pair of boots instead.