[806mtson]

I guess the theme/aesthetic is that they clash. I guess this is exemplified in the Sentai Gears.
Some give Powers, like Zyuoh Eagle's Wings. Some give weapons, like the Ryusoul Ken. Then there is Jetman, which replicated the Infamous Ending of the Finale Shot for Shot.

Though, I wonder something. So, I am looking at the RangerWiki (hate the layout, want the original back) and have realized that there are no "Auxiliary Mecha" in Zenkaiger. Unlike the previous Sentai Series, there is no Mashin Carry, no Mashin Rolland, no Mashin Lifton, no Scissor Dial Fighter, no Blade Dial Fighter, no Paonmaru, no Surfermaru, no UFOmaru, none of those.
Also, the lack of Mecha is weird, considering that it's an anniversary series on par with Gokaiger. Gokaiger has had 11 Mecha made in toy form, including the GokaiOh Components: GokaiGalleon, GokaiJet, GokaiTrailer, GokaiRacer, and GokaiMarine, GoZyuJin, and the Gokai Machines: MagiDragon, Dekamachine Patstriker, GaoLion, Karakuri Warrior Fūraimaru, and Engine Machalcon. Meanwhile, so far, there are only 9 Mecha for Zenkaiger, even that is including TwokaiRicky and TwokaiCuttanner. Will there be more Mecha as a whole?