I want them to fix both. Someone earlier noted that the 3.x style MC that 5e has is d&d wanting to have its cake & eat it too for the ease guidance of a class based system as well as the flexibility of a pointbuy system while just ignoring the problems it brings.
I disagree. The multiclass system is inherently fun. I am glad it is there.
It is one way to allow a level by level choice without overloading a single class with needless complexity.