Some of those dropped combos were lag induced, others were input error. I believe in one the videos i land BS 66B, i wanted to follow up with 666B but somehow i managed to input K, just K. -__-But yeah I really rarely use meter, and was completely unaware I could use 66B[BE] after WS AA or 6B6B. I will definitely use it more. I know the 4K etc. combo after BS WS B. Its just not in my muscle memory just yet. I remembered to do that maybe a handful of time.
Right now I use A+B,3 to keep pressure until my opponent actively stops it. Thanks for the welcome. I've been a lurker for a moment. Been playing since Soul Blade. It feels good to be here