Please may Foundation X be the main enemy this time.

As much as I hate the post-W Foundation X, if Zi-O is to be an anniversary series, they would make sense as the main antagonists.

I just love Kamen Rider pretty much any way I get it - even when Inoue is writing it with, yet another, hangover on the subway in to a production meeting with Jon Toei. I don't care if it's campy and goofy or dark and mysterious.- I love this show about sci-fi bug guys using their magical belts to fight back against their fascist oppressors.

All we need is for them to Goku the rider so
Evil entity sent to outside world > Bumps head along the way > Hi I am good guy of Justice > What?! I am your evil boss for real? Oh no! > I will not tolerate evil! For justice! > Happily ever after > Summer movie epilogue

:lolol

They'd never do that for Zi-O! That'd be for the Amazon Prime show, Kamen Rider Decades!

If they're gonna do Foundation X they already put themselves in a corner, Heisei Generations Final establishes Foundation X isn't a thing in Build's world as Build is in a parallel world. Zi-O will obviously cameo in the Build movie too

They don't seem to care a whole heck of a lot about continuity over at Toei.

I mean, we didn't know Build was from parallel world till Heisei Gens Final. Sure it was obvious and like Kyuranger it didn't really need confirmation that it was in a parallel world but the confirmation is always nice.

Just cause Build's in a different world doesn't mean Zi-O will be too, for all we know Build/Cross-Z accidentally open up a portal and Zi-O pops out to help the Riders before popping back out. Not to mention these cross-overs never really bother with continuity anyway, case in point Ghost in the Drive movie/finale, the Kyurangers in the Zyuoh vs Ninin movie. True Ending and Heisei Generations was just one of the few times they bothered.

Actually I remember Ghost's appearance in the Drive finale was canon in Ghost's show, it explained where he got the Newton Eyecon

Ah I'm mis remembering it then. Even so, he has the Newton eyecon in the movie too, not to mention both the movie and the Drive finale take place before Takeru even gets his powers.

Zi-O will probably be jumping between worlds anyway having to deal with both Build's world and the Legend Rider's world, unless they go for AR worlds again.