Definitely. Yonjis winch powers remind me of what older type robots can be like too, like Blitzcrank from League of Legends ofc or maybe that giant robot from Egghead.
Oda is definitely inspired by Laputha amongst other things and Germa also uses these giant shails we've never seen before and create a mobile kingdom, that can separate itself too and reattach?
Judges eyebrow mystery bothered me for SO long and now we've seen them, it was worth the wait but also ironically agonising now because he resembles Nika with them as you said ofc.
Now I'm actually invested in Germa snd Vinsmoke history and it makes him marrying someone called Sora way less of a coincidence now even.
My theory and this is ... probably way off but..
The fact the comic existed before the siblings and their powers.
Old Germa had DFs of the 5 powers and amplified by the raid suit, that Judge later engineered his kids to have without the fruits. So the original Stealth Black ages ago would have the Clear Clear Fruit, etc.
This would mean Judge's predecessor had the Garuda fruit that could have been a god like Nika, aka the brows, and passed to Judge (since he's not modified).
I really don't want to excuse Judge, but we were told very specifically how Zoan fruits can take over the will, and aside from Nika, maybe other gods are arrogant, and Sora was before that will took over.
Just a theory of course.
Either that or Vinsmoke Nika(that actually sounds cool).and Germa was part of ancient kingdom.