I once had 3x ELITE Ranked NPCs (Trained from Harmless), mainly with future MultiCrew in mind at that time. Alas - it never came to be.
In the end, my main issue wasn't that they cut 30% into the pay regardless of being onboard or not, the killer for me was that they also cut into any BGS inputs to that extent.
I consider that a bug, but since it still happens after I reported it a long time ago, I assume it's simply a design flaw.
For me being a BGS worker bee, that was absolutely unacceptable. Nothing beats handing in 1M in Combat Bonds - and see the display instantly flip to "700k - submitted" when handing them in.
My last ELITE NPC still flies for me occasionally, when she's not drunk from all that Lavian Brandy or Eranin Pearl Whiskey she earned on all that passive income
-- edit --
Oh my... Participated in a Necro :x
(quick into the decontamination chamber)