A system like that won't work either, no matter how hard you try and implement a skill system for progression in the end it all just boils down to attuning to the program's rythms to beat it and even the worst possible players will still be right there again to ruin your days.
A system like that doesn't solve the fundamental wrong here, people being unaware or even oblivious of group mechanics and their human inconsistencies.

I am hoping that the exp boost and other bonuses for dungeons will be sufficient to become the best alternative for leveling.
Bad players will always be a part of the game, but "forcing" people to group up more during leveling will certainly help reduce the number of them.