That's a good point -- writing a-plots and b-plots are similar but not identical skills... I think most of us tend to favor one or the other, though nothing's set in stone. When I first started writing (lo these many moons ago) I was *terrified* of writing a-plot. I teamed up with a co-author so that he could write the a-plot for me <g> A few years later, I was writing one of the early eps for Season 6 and realized it was almost all a-plot. It worked out okay, though, because the writer of the ep before mine had mostly written b-plot, so it wasn't too difficult to blend them together.
Um, I think I had a point to make... probably wanted to say that even if you're not good at/comfortable with a certain aspect of writing right now, doesn't mean you're doomed forever
PJ