[Kurona]

Since they also seem to consider SO-DO and SHODO to be compatible and never really try to get in each others' way - they always cover different series, CHRONICLE Den-O being in SHODO's heisei rider lineup - I think they wouldn't do anything pre-Kiva. In my mind the three biggest possibilities are Kiva, Fourze and Wizard; and maybe Drive and Ghost.

Kiva and Wizard would go similarly to Kuuga -- first wave would be their base form and three alternative forms (with Kiva's being combinable into DoGaBaKi like SHODO Agito), while the second wave is the final form, both forms of the main secondary, and one extra rider. Based on what Gaim's doing it looks like they want to prioritise what was in the show, so I think Wizard would go for Wiseman while Kiva... well, it's a toss-up between Saga and Dark Kiva. I think they'd do Dark Kiva for Otoya's popularity, but also Saga is a completely different character, but also also Saga getting the short end of the stick would be so fitting given his figure history... I dunno. And then P-Bandai sets for the movie stuff and in Wizard's case a Dragon set with All Dragon parts, again like Kuuga.

Fourze's the one I'm really stuck on. There's technically less in-show suits to cover and I think he's more popular than Kiva and Wizard to boot, but... the big draw is of course the modules. I'm at a loss how they'd try to incorporate all or even some of those. Judging by weapon packs SO-DO have done in the past for the mainline or even just Kiwami Arms there is a lot of stuff they can feasibly pack in, but I really wonder what their limit is there especially when 8 slots between two waves are taken up by 7 in-show suits (base, fire, elek, magnet, cosmic, meteor, storm). And of course, this also goes for Drive and Ghost where they also have more suits to cover.