First and foremost, I would like to say that I feel as though you're one of the few underrated bookers around here.
Now on to your question.
In my honest opinion, as a booker, I don't think you have a weak point. I think that your match and promo writing skills are equal but that doesn't mean that there's no room for improvement. There's always places to improve on and in your case I would say the best place for you to start to improve on is taking your time when putting together your show. For some reason, I feel as though your shows, most notably your promos are a bit rushed. Now I'm not telling you to procrastinate but whenever you write out your match and/or promo, read over it, re-read over then read it once again to make sure that it flows through properly.
That's probably the only thing that you can improve on, the flow of your matches. The matches are very good as I mentioned but the flow seems off at times to me. If you perfect the flow of your matches (I. E.- counters, reverses, etc.) then your BTB will, in my opinion, be recognized as a great BTB by everyone.