Part of the appeal of the traditional sitcom was that it followed a consistent formula. Week after week, you could tune in and know exactly what to expect. But every now and then, the producers would try and pull a fast one on us, removing characters, replacing actresses, even changing one character's race. These instances were never explained on the show and we were meant to just accept it. But you know what? We're not gonna accept it! Sure, it's years later and besides the point, but these were ridiculous and we need to acknowledge it!