dbz kai removed allot I enjoyed King kai's training wich was massively shortened. wich was great stuff in Z
While Kai was basically made as a way to increase sales, you have to understand it was made, or edited, rather, to closely follow the manga. The original series are still there for everyone to watch, Kai's purpose one would say is to appeal a newer audience, as well as those that read and, to an extent, prefer the manga, or anyone that wishes to experience the saga anew, really. I personally don't mind the filler episodes in DBZ, and although I've yet to watch the series, I certainly appreciate Kai for what it is.