Lynn, I'm trying very hard to avoid any debate on the meaning of the English word "drama". All I'm interested in is the definition of the Kerth Drama category. I firmly believe that the two concepts are poles apart.
In respect of the Kerth category: no, I don't believe that an A-plot is absolutely necessary for the Drama category, because the definition on the Kerths page no longer says it is:
will generally, though not always, contain a significant A-plot
However, I do also believe that it makes sense to have a Kerth category for stories which have fully-fledged A-plots and another for stories which are heavy on the B-plot side. Whether they're called "Best Drama" and "Best Relationship", "Best A-plot" and "Best B-plot", "Best Drama: A-plot Driven" and "Best Drama: Relationship Driven", or "Best Plugh" and "Best Xyzzy" is a matter of near-complete indifference to me... except that I kinda wish the annual arguments about what to call the damn things could be sorted out sometime before the heat death of the universe.
Mere (not holding her breath
)