I'm thinking about the tech choices. Psi illusion and communion are mutually exclusive, excess and destruction are mutually exclusive.
Illusion (grey or gold) is required for:
Ghost outfit
Contact mercenaries, and thus VIP kidnapping
Psi amp and witch outfit
Communion (green or red) is required for:
Bio suit
Cyclops conversion
Saviour medipack, and thus saviour outfit
Excess (green or gold) is required for:
Magical girl outfit
Super slave
Destruction (grey or red) is required for:
Tome of Lightning
Rod of Hellfire
Blood Axe
Hellgun
Deathblade
Destructor armor
No guarantee that this list is correct, I may have overlooked something.
I've never progressed in game far enough to use any of this stuff so I can't say which is more useful. But I would say VIP kidnapping is not something that should be blocked by a tech choice.