These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Nightmare Fuel: Despite the lack of gore, the show (at least the ABC seasons) did manage to be extremely unsettling, especially for a children's show.
Seasonal Rot: The CBS episodes, for being too preachy and not scary enough, thanks, in no small part, to the FCC's call to make kids' TV more educational and CBS' Standards and Practices being stricter than ABC's.
Some Anvils Need to Be Dropped: Say what you will about the third season, but some of its lessons were actually valuable. The episode "Unpopular Mechanics" had the moral that technological skill is only good when used constructively and the very loose adaptation of the comic story "Drawn and Quartered" explained how revenge against your enemies is never worth it.