i can see ur point on 2k player being valuable in a closed market and the vision u have of a totally different game where we would be forced to try to take advantage of players we today see as crap.
But i think the weaknesses and the simplicity of the tactics available would be a big limit to this. because if ur 2k player has atrocious defense then u dont have any possibility to "hide" him with an adequate tactic as u would try to do it in real life. so i dont see how u could really build an interesting competition on that.