Well if you like them, you like them. If you don't, you don't. I personally thought the borg children were lame. But I can see that they may have offered something to the show that wasn't there before. When you stand them next to Alexander they seem positively marvelous. Although, I loved R Star's pointy comment I found Chipotle (aka Voyager's first officer) very tolerable. And Kim was one of my favorite voyager characters. I doubt many people share my view on that. It all boils down to taste. And, to me, the borg children taste like crushed up ibuprofen.