> passing keyword arguments to metaclass will be much more rare for dataclasses than passing a ready namespace

The impetus of my running into these issues was assuming that things like `Generic[MyTypeVar]` would "just work" with `make_dataclass`, which seemed like a valid assumption since the class creation approach made heavy use of by `dataclasses` implies this:

@dataclass
class MyDclass(Generic[MyTypeVar]):
    var: MyTypeVar

The fact that I cannot do this, then, without error is surprising:

MyDclass = make_dataclass("MyDclass", (("var", MyTypeVar),), bases=(Generic[MyTypeVar],))

I'm not stating it HAS to be fixed. Maybe it doesn't have to. But to me, the above seems like the reason to do it if it's going to be done.