Wrong "ten". It doesn't use the heavenly kanji. It uses the "spin/turn" kanji.

...homophonic pun?

There are a couple of annoyances with the subs in the last few episodes. First off, the subs always say "Kou's mother" whenever someone talks about her whether they say Kou's oka-san or just oka-san. Secondly, they still read Kaku as "Master" even when Rin calls him oji-san (meaning uncle).

Honestly, if you wanted something that kept the meaning, "Qi-Power Changeover" would be the best way to handle that.

That's really not fair to bring against the subs, though. Japanese oftentimes tends to use familial terms like mother or brother when referring to someone of no relation.
So with Rin constantly referring to Kou's unnamed mother simply as "Mother," it could be confusing to American audiences who don't know about this quirk, and might possibly mislead some viewers into thinking that Kou's mother is also Rin's mother.
I think it's for the best to, when referring to her, to use "Kou's Mother" to understand what the character's are saying without confusion or alteration.

I can understand getting annoyed when they change Rin calling Kaku uncle, that's fair, but with an unnamed character like Rin's mom, they really didn't have any options.

Also, concerning the kanji usage on "Ten" in Tenshin, Japan is like, the country of puns. It was probably completely intentional to use a dual meaning with Ten.

Yeah, plus this is only Shout! Factory's second Sentai sub. I don't know if they've does stuff like this before, but it's still probably something you just gotta get a hang for.

And yes, homophonic ten puns!

I agree with you and I know why they did it. Again, all of these are just minor nitpicks from what is a fantastic set. The subs as a whole are solid, grammatically correct, and I didn't notice a single spelling error. I'm so glad they did this but now I worry they aren't going to do Kaku after all.

Sure, the lack of the Kakuranger previews after the final Dai episode don't mean anything, but it is weird that they would have the Dai ones on Zyu but not Kaku on Dai. Maybe they were planning to bring Dai out right from the get go and are going to use the sales of that to determine Kaku. Meh, I'm probably putting way too much thought into this.

I would much enjoy a Kakuranger set. It's my favorite 90's sentai (Well, of the ones I've seen), so it would be nice for it to get a stateside release.

So would I. There are still other series I want released by Shout!, but if I could get the holy trinity of Sentai shows (to me, as Zyu-Kaku are my top 3 favorites) and nothing else, I would be happy.

For me, GoGoV and Ginga would be my crying of joy releases.