Somehow it feels wrong to add a fairly complex new feature to the language (namely, ordered keyword arguments) to handle the very specific case of ordered dict constructors (or is there some other (clearly) different use intended?). If anything, I prefer the abuse of "slicing" syntax (so that one can write "od['a': 'b', 'c': 'd']" which is not much worse than "{'a': 'b', 'c': 'd'}").
Let's say we start with
def wrapper(**kwargs):
<some code that manipulates kwargs>
return g(**kwargs)
def g(**kwargs): pass
wrapper(a=1, b=2)
Nothing requires ordered keyword arguments, wrapper doesn't bother saving the argument order, everything is fine (but because there is some code that manipulates kwargs, an actual dict must be created, not just some sort of proxy)... now, just after wrapper is executed and before g gets called, globals()["g"] gets changed (by another thread...) to a function that does require ordered keyword arguments. What now?
Antony