Why can't the "less commited players" use PF then to make DF a better place? :3
As it is now Duty Finder is working, yes, but it is also far from being perfect. A simple option to choose between "slow and easy" and "serious play" would make a huge difference. The only reason why having all the players in one pool is better are the Q times... but then we could just allow people to choose both options and just tell them what is the purpose of the run at the start.
Mixing players who do care about their performance with players who do not care is DF flaw that should be fixed.