Well, some episodes didn't have much of the Gorgs in them, some didn't have the Gorgs at all! Then again, some episodes were almost nothing but Gorgs.
When I was younger, I never liked the Gorgs or Doozers. I love them now, of course, so I don't know how I feel about that either. The Gorgs should have some part in the story, definitely, but shouldn't be thrown in just for the sake of having them. So, if they don't fit with certain parts of the story, I suppose it's okay that their appearances are limited.