[hide] In Agito, a lot of people are becoming Agitos because of the end battle and the spreading of the seeds, a story can be worked from there.
In Ryuki, everything was gone due to reset, but a new story can evolve from that assuming Kanzaki decides to redo it.
In Faiz, Orphenoch King has the chance of coming back someday and there could be new systems and all.
In Blade, Kenzaki can be the new antagonist going mad and all cause of being Joker and craving battle,
In Hibiki, well I'm not sure about this one cause a lot of people didn't like it...
In Kabuto, can always go and visit the Worms home planet.
In Den-O... oh wait, they're already doing it.
In Kiva, the whole ending with the Neo-Fangire and Wataru's son from the future.
In Decade... visit Double, OOO and Fourze's world?
In Double, well technically it feels like it's done you know.
Annd OOO and Fourze's story's not done yet [/hide]
So what's your thoughts?
So no Kuuga sequel? xD Well, everything is doable, given we have got Rising Ultimate Kuuga and Abyss..
[hide]Agito - since the Agito is constantly evolving, also people becoming Agitos... it has potential, but could turn into a second Faiz with Agitos being just glorified Orphnochs.
Ryuki - well, it got a Sailor Moon ending, and SM continued for 4 more incarnations so it's perfectly doable... but with some new threat. KRDK would be easier to continue.
Faiz - rebuilt Smart Brain, new Riders, scientists trying to make a "cure" for Orpchnochs that are dying... a lot of possibilities here. And hopefully new forms and upgrades for old Riders!
Blade - basically a canonical Missing Ace. Of course it would differ greatly, but with more Undead running aroung, Kenzaki could return "safely" so two Jokers could fight other monsters once again. Kerberos being used as a basis for new, unstable Rider; splitting into three entities, easier to harness. King Form for Garren (the "intended" one, when he merges only with King) and Jack Form for Leangle.
Hibiki - with hundreds of Oni running around, the show could run for AGES, even with switching cast.
Kabuto - something between Faiz and Blade sequels - introduce Hercus/Ketaros (add Caucasus later) since all Zecters other than Kabuto and Gatack are damaged/destroyed (but will be fixed later
); a new character taking Hercus Zecter and transforming while trying to run from ZECT and its intended user - who becomes TheBee (for obvious reasons it's the first "fixed" Zecter, also due to similarities betwen it and Kabutech ones). I have many more ideas for this series
Den-O - yeah, movies, New Den-O and such. What i want to see is a sequel series having "proper" Ryotaro and Yuuto, but revolving around a new character who uses similar Den-O powers - in fact, the very same Rider Pass Ryotaro uses, got from the day when Hana lost it (and implied to be returned seconds after that, thanks to time travel
). Basically an anti-heroic black repaint Den-O, manipulated by unknown villains while time goes back to pre Den-O state, resulting in Sakurai's unexpected omeback, as well as Gaoh's... in short, more plot-driven series than original.
Kiva - Start with the wedding from the series finale, but without Masao - his character would appear later, not as ridiculous character, possibly with different Kiva powers; or maybe a female descendant using Kivara? Anyways, the "secret invasion" of Neo Fangires accompanied by "regular Fangires" attacking people.
Show that the world has changed due to Wataru's time travel - Kiva no longer should have sealed Kiva Form. Maybe add another future Rider, this time another IXA model with proper English voice and red-colored Rising form. The "two times" formula could continue with year 2040 or such being the other time.
Decade - not much to do here outside of potential teamup movies, they would have to introduce a new Rider (Dark Decade?), some more dimension hopping to random worlds (including originals!)...
W - we have two time periods to use:
1) First Year - Shotaro and Phil learning to use W, add some unseen Museum executives, some freelance villain, maybe them losing the belt for a while and Shotaro becoming Joker for the first time (in A to Z he seemed accustomed to that already...)
2) Joker Days - everything between last two episodes of the series, EXE as villain group.
Possibly Kiva-like scenario with two timelines, making it possible to use both scenarios in one series.
OOO - depends on the upcoming Movie Wars, but i had an idea for Core Medals to pop out in different places of the world, possesing random people and Kogami being forced to produce more Births to deal with the situation; possibly new Greeds based off old Cores, Lost Ankh-like; add an amnesiac character using different OOO belt, unaware of being Dinosaur Greed (not a possesed human this time)...[/hide]
Potentially, every series could get a sequel. The problem is, Toei has no reason to produce such, since it doesn't guarantee Den-O-level commercial success.