The Kuros from Toqger, hands down

Knew someone was gonna say that :lolol

I thought that Kyuuranger would be called starranger and the would have space vehilces like Megaranger.

Percentage chance we'll eventually get a 3rd season of Akibaranger?

Zero for now. Who knows maybe they will release something like a movie in the future but considering it was a promo show for sentai figuarts later on by season 2 pretty much I would not count on it.

Would make sense a gryphon mecha in some feline/cat-themed sentai ?

Ehh, don't see a problem with it since gryphons are cats with an eagle's head, wings, and talons.

I have to admit. I find it disappointing when 1 character can be Lupin and Patren X. I mean seriously, why can't they follow the examples of Go-Onger and Go-Busters? I may have misread the scans but I was hoping 1 character to be Patren X and another character to be Lupin X, I guess it is not gonna happen. There goes my excitement for Sixth Rangers, ruined :(

Given that we already have 6 face actors in the show and that the sixth rangers are meant to shake up the status quo; I think Lupin/Patren X is going to be similar to Shurikenger, a character who we'll only see in suit, showing up from time to time and being this elusive enigma for both teams.

Sure, why not? Or you can have a Sphinx or a Nekomata as the Sixth Ranger.

As for the main team:
Nekoranger Red: Lion
Nekoranger Black: Panther
Nekoranger Blue: Jaguar
Nekoranger Yellow: Cheetah
Nekoranger White: Tiger