Yeah, I remember the overwhelming feeling I had through BC with the sheer amount of stuff to do while learning how to play as well.
said by seaquake:I finished Loremaster pre-CATA launch when we were on version 3.3.x. IE, flying wasn't available in the old world. After the 4.0.1 patch came out, the old world quests were completely redone. I went through and got all of the new old world zone quest achievements. Of course, I did this before CATA expac was released and flying was available.
I finished the first go-around during that time as well (March 2nd, 2010, or during Patch 3.3.2). It was definitely much easier/faster the second time through due to flying. The quest changes made me appreciate Cataclysm a bit more as well.