Ichimaru, such a system would be a nightmare for the devs. How could you ever do any further development on the game if 3% of the players had these stats running, 4% had those, 16% had this set, and so on. Being able to test and balance future units, techs, AI tweaks, etc. require that everybody be on the same playing field.
I'm sort of surprised at these responses. I've yet to see a game that didn't use the first 1-2 months as an extended beta test (and Brad's so slick, I just paid him another $20 to officially beta test upcoming patches, go figure) unless the game simply wasn't supported at all. One of the side effects of going from a small beta to full out commercial sales is you get a lot more monkeys banging at the typewriters and issues you didn't forsee become evident. Once they're evident, if the devs care about the longterm health of the game, they get addressed, end of story.
In this case the devs were faced with two different choices given how powerful the +10, +15 PQ abilities were: either rebalance the AIs to almost always go for these and force all the players to also always chose them to keep up with the 'improved' AI, or take away the imbalanced elements of the game. They chose wisely and if you want to keep seeing new changes and game elements you're just going to have suck it up and accept it.