I thought in order to promote the more underrated series', I've decided to make this blog to show why some PR series' aren't the best ever. These are all my opinions so don't take them personally.
Mighty Morphin Power Rangers (All seasons)
We can all say everybody in the cast was memorable. But keep in mind, though, that as the 3 seasons progressed, the villains, especially, were watered down a lot. Goldar, for example, was perhaps one of the best villains ever during Season 1 of MMPR. Starting with Season 2, he had become a rather comical character and developed a somewhat stupid personality. The same went with Rita, Master Vile, and possibly Tommy becoming very cocky.
Don't forget that MMPR became less creative with their characters. In fact, they had used the same costumes over the entire time span.
Power Rangers Time Force
(YES, I KNOW THE PICTURE IS TIMERANGER. XD)
Time Force was obviously faithful to Timeranger, but it didn't mean perfect for the PR fans. Time Force fans should keep in mind that the storyline lacked originality, obviously. It can be bad or good from either perspective. Power Rangers Time Force also suffers a little from the dialogue from characters such as Nadira, with some failed comic relief, and even Jen (Pink Ranger). Just like every Power Rangers show, the dialogue is never perfect. The crossover with Power Rangers Lightspeed Rescue was a rather poor crossover, though both seasons were amazing.
Power Rangers Dino Thunder
Probably the most overrated of the Disney seasons. But honestly, Tommy? Is that the only good thing to the show? Dino Thunder also to lack a smooth story, and some of the villains weren't as evil as Ninja Storm, the previous PR series. A cheesy crossover was also included, so we can obviously say it's not the best series. The praise for Dino Thunder was only because of Tommy, or at least the majority of it.
Keep in mind, everyone, this is only my opinion. However, you are more than welcome to post your own ideas. Thank you. :)