So what?
Think about what you are saying. You want the programmers to not make the game as good as possible so you can max everything. But thats foolish. Think of it this way man, if Overall quality, in a vacuum, is on a scale of 1-10. Your card hits 6 on the scale, My card hits 9. (these are just random generic numbers to illustrate a point.) The programmers make the game hit the 8 point on quality. I get all the bells and whistles and you get a 6 quality out of 8 possible. Now what you want is them to make it a 6 or even 5 quality, so you can max it. Its not that you are getting more, you are not, you are getting what your card can handle either way. I on the other hand get even less if you can max it out. Does that make sense?
And if you want "future proof" don't buy a 3 year old card and expect to be "future proof."
Oh and windows index score is a crap system. Use a stress test if you want a real ranking.