[Celjabba]

I guess you want to use some powerups for DF or MH ?

Those are cinematic, not for mundane realistic humans.

I think you can lower the prerequisites, adjusting for your campaign cap.

Exemple :
A MH-techie powerup require IQ 18, the human techie have IQ between 16 and 20. > 16-20 become 12-15, requirement = IQ 13 or 14.
A DF-barbarian require ST 18, the human barbarian have ST between 18 and 25. > 17-20(25) become 14-15(16), requirement = ST 14.