[Sentai]

People need to remember that Mighty Morphin' Power Rangers, Super Sentai, and even Kamen Rider, all exist for one reason. Sales. Kamen Rider gets away with more mature themes. Super Sentai has become more light-hearted recently. And MMPR only ever existed as a vehicle to sell plastic toys. Which means, primarily that they need to get kids watching those screens and begging parents for them. Scaring them off with dark, and even some mature, themes isn't the way to go about doing that. Look at Lord Zedd. When he first appeared, slowly turned on his throne, stroking his snake, parents saw him as way to dark and they made him more of a typical MMPR bad guy. A male Rita.
I wish they would put more of an effort into storytelling and characters, things you can do easily without making it darker or even more mature, but I don't see it happening. Which is sad. Look at how well Avatar did for Nick and that had some mature themes in there. So you'd think they would push for Saban to try a little harder.