Joseph Wright wrote:
> 
> Also, to answer my own original question, this would then mean that
> Morten's suggestion \exp_after:NN => \exp_args:NE would make sense. I
> think that you simple have to accept that it is slightly odd (the whole
> \exp_args:NE { \macro } business).

Forgot own suggestion: \exp_args:NU is what I meant.
-- 
Joseph Wright