Is it obvious enough that I'm a hopeless Godzilla nerd?
Legendary has made it clear that the Monsterverse will continue after Godzilla vs Kong, especially since Toho voiced their approval of this take on their cinema icons. So, what do my fellow gujiller fans want to see after the upcoming Godzilla vs Kong movie?
I'd like to see a lot. Kicking this off:
We know that one member of Godzilla's species was "Dagon." Why not expand on this? Could a more evolved Godzilla (maybe based on Toho's "Millennium" Godzilla) be introduced as an antagonistic, human-hating Titan for some classic city-smashing action? What about TriStar's version of Godzilla introduced as a cousin species? I'm getting a "the Good, the Bad, and the Ugly" vibe from this idea.
Back to the thought of including TriStar's Godzilla (aka "Zilla") as a cousin species to Legendary's Godzilla, what other "cousin Titans" could be included? Toho's "Gaira" could be a cousin of Kong's species, Battra a cousin of Mothra's species, Megaguirus a cousin of the MUTOs, etc.
More "Toho tech"
Legendary reintroduced the Oxygen Destroyer (the weapon used to kill Godzilla in the original film) and gave us a few nods to the futuristic aircraft from past movies with the USS Argo, but there's still a lot that can be explored, including one of the most iconic anti-Kaiju weapons: the maser.
Widening the "Titan underworld"
We know about Alan Jonah's organization of eco-terrorists, but considering how the world has been shaken by a mass awakening of giant creatures, there should be a lot more going on in this particular field. In the movie Godzilla vs Biollante, this was a huge plot point. Groups of mercenaries from the US and a fictional Middle-Eastern nation called "Saradia" were all committing espionage in Japan with the goal of securing secret and very valuable materials, such as anti-radiation bacteria and Godzilla cells. With the new movies showing the world thrown into chaos, Legendary could easily include more of this action, possibly even reintroducing Saradia as a new nation emerging from the political strife.
Roles for original actors
This would be a nice little touch to new movies if at all possible. Actors from older Godzilla films could be featured, such as Manjot Bedi (Saradian agent "SSS9") and Don Frye (captain of the Gotengo from Godzilla: Final Wars).
Introduction of Toho's "lost civilizations"
We know that the hollow earth and its lost civilizations is a major plot point in the Monsterverse. We can safely assume that Atlantis and other legendary empires are included in this buried world, but what about the lost empires from Toho's old movies? The lost continent of Mu would be an excellent plot point used to reintroduce monsters like Manda and Gigan.
Bringing Gamera into the Monsterverse
Fans have been asking for this Toho-Daiei crossover for ages. It's about time it happened. Why not give Gamera some "upgrades" as well? Maybe make his armored shell a giant biological tokamak reactor, letting him blast CMEs out of his mouth.
More emphasis on Japan
I mean, let's be real. Godzilla is Japan's creation. In my mind, the movies haven't been including Japan nearly enough. Sure, the first MUTO began its rampage in Japan, but Godzilla has yet to even travel near the nation in the new movies.