There are dozens of us that still use Neo Heisei. Dozens! :lol

Yes, but it didn't work out. Partly because they didn't realize that what makes Momotaros interesting is interacting with other Imagins.
By the way, this also works:
Zero-One is Den-O because the main character is a funny bungler who is possessed by something;
Saber is Den-O due to amnesia, a promise made, and something is infused into the main character again. And there's also an angry green rider with a kaijin friend whose help he doesn't appreciate.
Revice is Den-O because demons are like imajins;
Geats is Den-O because time travelers, a lot of beings wear the same costume and have over-the-top drama at the end. And also there's an angry bull rider with a kaijin friend he doesn't appreciate.
Gotchard is Den-O because he has a train theme.

This applies to Gaim as well. Especially given the appearance of Jamato and their love of fruit.

Well, I would say that the palm on the Wizard's belt can be considered as following a number pattern. It's already problematic to find a six in Gaim.

Keep in mind the rumor wasn't that the rival character would become the secondary rider, it was that he is not a Kamen Rider and despite not being one he is still treated like the secondary and fulfills the same role (still yet to be seen if that's really the case but that's what the rumor was).

There's also the matter of the "Decade/Legend" Rider that keeps coming up in the rumors always being referred to as Gotchard's third Rider despite being the only other character besides Gotchard to have the Kamen Rider name (at least for now, who know what Q2 onwards holds).

Personally, I prefer the alphabetical theory according to which:
Zero-One is AI;
Saber is Books;
Revice is a Contract;
Geats is Desire;
Gotchard is Elements.
In general, this is cool, especially for a period when we don?t know anything about the future rider except for the name. The main thing is not to take it too seriously.

Counting the 5 fingers on the hand of the WizarDriver is changing how the number theory works entirely just for the sake of keeping it going. The theory had to do with the amount gimmicks items associated that years belt, so for the theory to be consistent it would have to go:

2 memories, 3 medals, 4 switches, ...2 rings, 1 lock, 1 car, 1 eye, 1-2 cartridges, 2 bottles, and 1-2 watches.

Saying things like 5 fingers, an open lock looks like a 6, or a rotated shift car looks like a 7 was fans changing the rules of how that theory worked.

I would even go so far as to suggest that he won't be a rider (although I still think he will be). Chaser and Rogue are considered from the moment they became full-fledged riders, yielding to later characters that appeared. If we consider that this principle is mandatory (and it is not mandatory), this means that either the pink pseudo-rider will not become a rider, or the tertiary will appear only after his transformation.

I did not know that. But given that the theory was that Toei followed it, one can imagine that at some point the approach was changed due to impracticality. That is, long jingles are one thing, and a belt into which you need to put a dozen gimmicks is quite another.

Tbh the "Neo Deca Driver" adding cards for W to Zi-O kinda just cemented Neo Heisei for me lol

It was the default phrase when I started rider, so I never really switched off of it, and then the Neo Deca Driver has been my excuse to keep using it

Like if the key defining feature of the "Neo" Decadriver is that it adds the symbols for W-Zi-O to the belt then certainly thay makes them the "Neo" Riders of the heisei era... "Neo Heiseo Riders" if you will

[This is ofc just a rationalization not anything official lol]

I'll write "heisei phase 2" online if I want to be taken seriously though lmao