Nah.... It's a fine story and I appreciate it compared to most of the super sentai series.

Also did anyone notice the nice touch in that Tarou didn't die because he probably considered his team family...

Not really. He's just very slowly becoming adjusting to lying, but when pressed outright, he still falls.

So the hiccuping was him resisting the urge to immediately call out a lie, then?

The hiccuping is just Taro being confused in whats going on.

I didn't learn anything new about Saruhara or his actual family like I was hoping to, but hey, I enjoyed seeing all the Donbrothers working together to catch a con artist in the act as he attempts to steal from the world's most immaterial man. A good episode to end the year.

Although judging by the next time preview, Kitou is a future member of the Saruhara family.

So you appreciate nothing happening? Okay. We have about two months left of this show and we know nothing about nothing. Any other Sentai Series and we would know who the big boss is by now. What's his or her motivation was for doing the things that they do. And what's their final big plan will be.

We barely know anything about our heroes let alone who's the bad guys.

I disagree that nothing has happened or that we know nothing. We know about the Juuto rebelling against the Nouto and thier creators the Don Clan. We know that Sonoshi still out there. We have the whole Miho/Natsumi subplot being now spurned by Sononni lying to Inuzuka about Murasame being able to free the original. We still have to deal with Mother and Murasame going out of control. And what the deal with the Penguin Juuto with Jiro.

And I also disagree that we know nothing about our heroes. Taro has his whole background of being inhumanly perfect which makes quite social inept and how he relates more to his rival Sonoi which makes thier relationship more compelling. Haruka whole subplot with Sonoza driving her forward as a manga artist. Everything about Inuzuka and Kijino is still ongoing. And both Jiro coexisting and needing to gain strength together.

The only one we really don't know much about is admittly Saruhara and Kaito. Kaito at this point seems to just serve as mystery box character in which his existence raise a bunch of question that the show frankly dosen't seem to care answer. And Saruhara is just underutlized.

Hard to appreciate a story that isn't there.

Decade has more of a story than Donbrothers XD

Why Did They Rebel Though?

And? He wasn't presented as the big boss. So he's just a expendable character at this point.
Like you said "Sub-Plot" There for filler only and not adding anything of significance to the over all story.

Please Refer To The Previous Answer

Please, we know that Taro is socially awkward and that he's part of The Don Clan. What we don't know is who put him in the giant peach, why did they send him there as baby, and what exactly is his mission suppose to be?

Really? We know that they found Taro and Jiro as babies. We know that Haruka was accused of plagiarism, and we know that Tsubasa was wanted by the police. And like you just said we know absolutely nothing about our Blue Ranger besides he's broke and likes saying Haikus. And why is Kaito there? He's only loosely acting as the link that connects the two shows together.