DMI (Deliberately Meaningless Index) doesn't actually impact player skill at all. It's in essence Salary x Game Shape.
It's useful for training to see if a player has been receiving any, and it's useful for seeing how high of game shape a player is within their interval (8 could mean 8.1 or 8.9).
However, game shape plays no real role in how good a player is. You could have a donkey big at 15 in every big skill with 80 TSP hit 1,500,000 DMI while a balanced SF hits 120 TSP and barely scratches 800,000 DMI. However, the SF a much better player in most scenarios and will play better, he will have a lower salary resulting in a lower DMI.
I think therefore your suggestion is not useful and you might want to rethink that idea with this knowledge and likely how you scout opposing players in the future.