The difficulty of Normal Content in this game needs to increase.

[Kaurhz]

Players are bad because the content it too easy, up the content and then people will be forced to get better you do it.

It's treating the root cause

Most players that are bad, are bad because they choose to be bad of their own volition, and this is something that I would argue is largely independent of the content they're doing - In these cases the only thing you'll accomplish is making those in the group pick up the slack even more. You're better off just leaving the standard content as it is, and then having better middle-ground content which is mandatory to do extreme and savage.