What I wanted to discuss is why don't Doctrines affect unit's resource cost? Right now a squad of Tactical marines or Rangers without doctrines cost as much as the one that is fully stuffed. The one doesn't create any problems, in fact it might be underperforming, while the other is a nightmare to balance.
In my opinion Doctrines should increase how much req and/or power you pay for the unit. Want grenades on your tacticals? 10 power per squad. Want to fire on the move? 5 power per squad. Howling Banshees are mediocre without doctrines? Reduce their base cost, etc. Should fix the opportunity cost of not stacking doctrines too.
What do you think?