If they actually have such code, I have reason to believe it would be in SE's best interests to do the opposite of your proposition. That is, 'bad' players would be grouped with good players and vice versa. What you're suggesting is basically going to ruin DF by putting 'bad' players in situations where they literally can't clear instances and probably ragequit while the 'good' players keep riding the tailwind of their 'skilled player' privilege.
If you want to play with 'good' players, enter as a premade. When entering duty finder, always expect to carry your party first and foremost to avoid disappointment.