For all its debated faults, at least the animated Trek did NOT force a cute mascot comic relief character upon us. If that had happened, I don't think there'd be ANY debate whether or not Kirk and company had those missions! Fans would demand the master negatives be burned!
As annoying as Scrappy is on his own, the worst thing about him is what he does to the concept of Scooby (and this is true of Scooby-Dum and Scooby-Dee as well). Instead of a remarkable quasi-talking dog, Scooby-Doo becomes a talking dog with a speech impediment.
Sorry for the topic drift. (corrects course)