Reasons to cancel Power Rangers

And yet, it's probably the best anniversary season among Sentai, and one of the best anniversaries among Toku. Probably surpassed by Ultraman Mebius, one of the best Tokus homaging old series, with great characters and great plot.
The gimmick is Kamen Rider Decade-ish. In fact, Gokaiger IS Kamen Rider Decade but better. Kamen Rider had the similar gimmick, didn't have a plot (no, actually didn't have a plot), barely toku veterans appeared (anyway, the Black/RX episodes were the highlight of the whole series. In fact in reruns, I only watched those two episodes) and the villians, well, there aren't important. Narutaki actually is the hero, if we notice he wanted to stop Decade of destroying worlds (Decade being the "villian" could resulted, but the execution is soooooooooooooooooooooo bad, it should be teached in writing schools by the class of "how no to make a plot for a tv series"). Kamen Rider didn't have good anniversary seasons. Period. Wait! Probably Fourze. The 40th anniversary, it's a good series. But it didn't homage older series.
Gokaiger had awful villians, created only to be destroyed by the Gokaiger. Basco is good, but the series take a dive after his great fight with Marvelous. A shame. He could be the final villian, like Escape. In that way, Go-Busters surpassed Gokaiger. They noticed Messiah was a crappy villian, and they eras it from the series.