[Black Fang]

I like that Sentai from 2012-2017 has been trying new things or retrying stuff from decades ago. But it never goes all the way with these new things; the novelty wears off and is replaced with the same ol' same ol' it's been doing for years.

Go-Busters: a nice throwback to 90s Sentai in feel and with the mechas. I didn't care for Red's chicken-phobia, but it's a decent show overall.

Kyoryuger: first show since Changeman without a yellow. Some good ideas (legacy heroes, the concept of Deboss) but an awful show. Annoying characters and horribly designed villains doing wacky anime hijinks with occasional breaks for "story". A stupid use of a musical theme. (Samba? Why samba of all things??) A chore to watch.

ToQger: first orange-colored hero since Battle Fever J, color swapping. This one is a surprising gem in an otherwise lackluster decade. I genuinely enjoyed it. Except for the Rainbow Line crew and IMMAGGINNAAAAAAATTIIOOOOOON being treated like the Force. The color swapping had no practical use, but I liked how Kobayashi and Co. created uses for them, from distractions to extending the time limit in the Shadow Towns.

Ninninger: first pink-white combo since Changeman. A good change in the family Sentai where they're cousins instead of siblings. Again, some good ideas, Shurikenjin is unique, but overall very bland and not well paced. Plot points are introduced at random and/or are forgotten for long stretched until the very end. The twist at the end is never even hinted at beforehand. Takaharu is irritating when he's "on fire" (his actor can't even say the line convincingly, for crying out loud).

Zyuohger: first time using those team colors, Yamato and Misao's alternate modes. Same problems as Ninninger. I like that on the one hand they did the "can never go home again" plot more justice than Goseiger did, but on the other hand there wasn't as much emotional pull as even ToQger. Plus I don't care for their take on the Zyumen and Zyuland: just an alternate species rather than, say, guardian deities of wildlife, which frankly would make more sense than a whale man somehow being an ancestor to elephants, tigers, etc. Misao and Uncle Mario are annoying.

I have not yet seen Kyuranger.

In fact, the running theme of this era of Sentai can be "annoying support characters". Almost all of them engage in behavior that you'd see in a nuthouse passed off as comedy.