I'm also finding that people are now less forgiving of my mistakes. I guess before there was little commentary available so the newness factor helped a lot. It's driving me to try and improve more. I do feel i've improved significantly where stuttering is concerned and do it a lot less in the newer vods, but I'm gonna keep trying to improve over time.
I was also approached recently by QuadV who are probably one of if not the best shoutcasting crew around and joined up with them which is pretty great. Though they don't have any major starcraft events to cover in the near future for me. But hopefully things will happen in the future, they certainly have all the attributes of being a very professional outfit.
I'm trying also to find a balance between live casts and recorded commentaries since I can't do em all etc. But for now my goal is to just do a few quality vods every week and see how that goes.