Well yes the evaluation is related to the salary. So given that and the position you can guess the players strengths and weaknesses. And it has nothing to do with their potential, which is why there are two different steps.
Making something easier doesn't always mean making it better. A bit of challenge and surprise is what makes the game appreciable.
I feel like there's other issues worth Marin's work, while this one seems to be working pretty well. But that's just my two cents on the topic :)