[Peter]

The invisiportals were almost every episode. They needed the characters to move around from scene to scene, they just had invisiportals pop up right where they were needed ... until the finale, where the Rangers had to enact a complicated and risky plan just to get one to open (which only made the last 37 episodes worth of convenient portals all the more glaring).

Leaving aside the Dino Gems becoming a deus ex machina that popped up with new powers whenever the plot required them to (short-circuiting the triptoids? The giant energy Tyrannosaurus? What the heck was that?).

And they dropped the ball on every major subplot they tried to handle. Zeltrax becomes somebody we've never met before that we really don't have much reason to care about, the threat of the evil White Ranger is negated in a subplot by accident (!) one day, the climactic battle featured a bobblehead. The only subplot that was developed and resolved in a satisfactory way was Cassidy and Ethan dating for a few episodes. Beyond that...

I also thought Mesogog was just lame. Tell us again, Meso, how everything that went wrong with today's plot was Elsa and Zeltrax's fault, even though they barely appeared in the episode and you yourself were face-to-face with the problem more than anyone else. Oh, and tell us how you're going to murder them for failing you, but then just forget to, for thirty-seven epsiodes in a row. It was not a well-written season, I just can't look at it and see anything other than that.