Changing the subject: Given how freely the show reinvented characters and elements from the original show, it bugged me that they were so faithful to one specific detail -- the fact that the Robot was only called "the Robot," or just "Robot" like a personal name. (Well, the original Robot was technically called B-9, but never onscreen, I think.) It's kind of silly that Will feels such a bond to the Robot but never considers giving it a name. And it gets confusing when there are a lot more robots for the characters to talk about, and they had to specify "Will's Robot" or the like.
Also, it's always bugged me how selective Robot's language acquisition was in this show. He picked up "Danger, Will Robinson" within minutes, but only gradually added a handful of other words to his vocabulary over the course of nearly two years. I always found that contrived, and too cutesy a use of the famous catchphrase. Having SAR use actual verbs and (brief) sentence structure in taunting Will just underlines how artificial it was that Robot couldn't speak more clearly.