How do you propose to back date this for all of the players who are already past 1000 and 2000 games? Why do you choose 2.0 and 1.75? At those levels, someone needs to be a brigadier after 1000 and have 4500 point after 2000. Seems a lot like just giving medals to high ranked people.
Take a look at the High Ranker's Medal that was suggested by ManBungalow.