a heart's a heavy burden

If Beyond got turned into a full blown series or a movie or even a manga or audio drama, what do you think the plot would be?

We do have at least the implication that there is going to be a novelization of the story - and let's be real, considering the following paragraph(s), even if Kakudou narrowed this down to a (quite incoherent) 4-minute-PV (that took over a year to make!!!), he said it himself: It was VERY selective and since he's been brewing up ideas for probably 30+ years at this point... There'd be enough plot for at least 54 more episodes.

We DO have a short synopsis for the part with Taichi, Yamato and Iori, but we can see that there is a lot more to it:

Considering the amount of cameos and nudges within the PV, one has to ask the question how much of what we've seen is SOLELY Kakudou's vision - and where he had to make "compromises". (I'm quoting a Japanese Twitter account moping about the hints towards Tri onwards, claiming that "we don't know if those were really Maki and Rui - and Meiko may really just be a random Chosen Child in this universe." We really don't know anything here, they may as well just have been cameos and nothing else!).

@jamesthedigidestined has come up with a general plot idea that I'm gonna post and elaborate on just a little bit!

"So, Jap government already has a Digimon research division, being the epicenter, but USA wouldn't want to lag behind on a new field of research, and would basically hunt for the American Chosen, leading to Japan/Koushirou (possibly as 1337 hackerman) to locate them, while Taichi, Yamato, and Iori are out recovering children. Taito because brawn + marketing and Iori because gatehop + Engrish.

This leads to America to build a supercomputer in an attempt to take over the Digital World, as the Digital World servers naturally migrate to the strongest computer of that era, and the current strongest (Yggdrasil) is an anonymous supercomputer that they can’t locate, leading to Digital World: Liberty (WIP title) and the attempt of Liberty to overthrow Homeostasis as the master controller, which is when Koushirou attacks and this is when the supercomputer Liberty reveals its its own consciousness now and can project AT Fields. The gears are Liberty’s attempt at forcibly controlling Digital World: Yggdrasil, specifically the Digimon."

Having the military involved was already a little nod towards Takeru's little drama fanfiction after the events of The Beginning (which also mentions the Evangelion-esque AT Field we see, coincidentally, with Koushirou and Kabuterimon in Beyond). Even if that drama was not authorized by Kakudou himself, we KNOW that higher-scale-involvement HAD been a thing in Kakudou's previous epilogue-related ideas:

Of course that doesn't really help us plot-wise overall, because these are all very loose ideas, but I'd narrow this down to three separate POTENTIAL main-plot-strings:

1.) The "Liberty" plot outlined above (or something similar along those lines).

2.) Everything that could be a 02 leftover, such as, but not limited to: Armor evolution (as seen with Daisuke, Ken and Iori), Arukenimon (maybe having a Wizardmon-esque cameo since she somehow survived?), the whole Dark Ocean aspect. Hikari being affected by those dark particles could be either a nod towards the Dark Ocean, or, as James pointed out, may have been Liberty trying to enter Hikari's mind. Also, as posted above, SOME kind of space-related involvement.

3.) Leftover plots from Tri/The Beginning - IF that was Rui, Dark Gennai or someone entirely else. Some people on Twitter speculated that Takeru got Maki back from the Dark Ocean and in my opinion, the whole reason Meiko showed up in this context would be to show the connection between this subplot (Meiko+Maki/Tri) to the original cast (Hikari being affected by it and Takeru going to act on it - thus, they'd finally get something to do in the forefront).

So yeah... Lots of stuff to figure out and focus on!