The two men who walk into the Sentai Cafe in #3 are friends of the director — Ryuta Tasaki — and have a history in tokusatsu. Shocker Ono (the bandana'd one) is a famous Japanese personality, former toku stuntman and was once Ishimori Pro's manager. The other one, Kaneko Yoshinobu, played Aokage, the young sidekick of the title character in Kamen no Ninja Akakage.
No Budget: Compared with other modern Sentai, there's a noticable drop in quality across the board. From the CGI & effects to the monster/mook design to the fight choreography to even the Akibaranger suits themselves. Still doesn't keep the fights from being entertainingly awesome though.
May be justified in that the show targets an older demographic, and of course by being an Affectionate Parody.
Also consider the time they spend in their suits is more to set up gags and in-suit related humor as opposed to just fighting.
Then again, the Akibaranger helmets are much more uniquely detailed (the anime hair would require a more elaborate molding procedure then the standard Super Sentai helmets,) the costumes contain full armor instead of just the usual spandex, and instead of the standard rubber costume, the mecha is done in much more costly CGI, so YMMV on this one.
That's why the mecha is only used in episodes 2, 7 and 12.
Apparently blue and yellow's helmet hair kept breaking off, so they redesigned it for season 2.
The Other Darrin: The legends fighting side by side with the Akibarangers (Dekaranger, Boukenger and Jetman) in Season 2 Episode 1 all have voiceovers not done by their original actors. The same goes to Tyrannoranger and Dragonranger. Averted with Kibaranger, who uses the original Byakkoshinken voice. Although zig-zagged with Ryuranger: When he's China Red, he's voiced by Tomokazu Seki. Once he's back being himself, he's back to being voiced by Keiichi Wada.
Nao Nagasawa is present in the Hurricaneger episode... but she's instead voicing the Monster of the Week (Hadezkin) instead of her usual Hurricane Blue, who is taken over by Akiko Nakagawa (otherwise known as Bomper and Inori Yamabuki/Cure Pine). Also, along with Tomokazu Seki standing in for BOTH Hurricane Red and Kabutoraiger, Takeshi Kusao is also present standing in for BOTH Hurricane Yellow and Kuwagaraiger (and in the previous two episodes, he took in for Dragon Ranger).
No Export for You: There are official English subtitles for the show, but they're only viewable in Asian countries.
So are the SH Figuarts for the show in the US due to license problems (same will happen with Deka Red and Bouken Red), which explains the US release of SH Figuarts Red Hawk (which itself an aversion along with the Web exclusive Black Condor) is missing the Jet Winger part.