Progress should be rewarded, not punished with increased difficulty.
We already have tournament farmers in polish live version that sit 2 years in beginning chapters making 10k+ tournament scores while endgame players struggle to make 1600.
Well the max score those accounts can get is 7200 so that does't count (26/22 provincies of each type which is the ork limitation)
Fortunatly this is now countered by the feniks so those no longer rule the world of tournaments.
And struggle for 1600, then you must be doing somehting really wrong, igf you said struggle for 5000 I could accept your plea, but 1600 is dead easy for any account in any chapter, researched any amount of SS.
The only ones who fail 1600 are those with no unit production whatsoever.
I agree that wonders should not be a part of the equasion, and I would love it if they would reveal the formula so we could see if they made more errors.
For example the game does'n get "easier" after 467 provincies, so I wonder if the formula includes the amount of provincies cleared, and it it's properly cut off at 467 provinces and doens not increase difficulty beyond that limitation.
That would be just as lame as the wonders if that was one of the parameters.