[ThatSwedishGuy]

Stop introducing new toys every episode (or damn near it).

I'm not the target audience here, not by a longshot, I'm not 6 years old, I'm not Japanese and I don't buy toys at all so my opinion is entirely moot. But my theory is that when you introduce toys every episode and kids catch on to that, they stop buying it. Even worse, once parents catch on that there's something new every week, it'll be that much harder to sell. Compare that to how it used to be, where a mid-season reveal of a new mecha would be huge news and all the kids had to have it.

If I got to wish entirely upon a star with considering anyone else, bigger focus on narrative and better transformation sequences. Feel free to build up the reveal of the main mecha for a few episodes, make it feel like the teams needed to work a bit to get the mech instead of just being handed to them because they're dressed in spandex all of a sudden.
As for the transformation sequences, maybe I was just weird as a kid but that was the best part. The anticipation and the ultimate climax of the complete mech was brilliant every week. The more detailed and/or action there was, the better. The first transformation in Zyuranger or GoGoV are still some of the best. And as an adult I really appreciate if thought has gone together into how it all fits together rather than just handwaving it, bright flash then "Magic! It's a whole robot now... somehow." Oh, and feel free to make things a bit more unique, maybe not every season needs every ranger to start out with their own vehicle.

Gah, I'm rambling and on a phone so maybe it doesn't make sense.