User blog comment:GodzillaIsland7.2/Top 10 Not-To-Be Godzilla Movie Ideas/@comment-25285745-20140906014309

10.) Godzilla: Return of MechaGodzilla (Godzilla and Kiryu vs. MechaGodzilla 1 and King Ghidorah)

9.) Godzilla: Earth Defender (Godzilla, Rodan, Anguirus, and Mothra vs. King Ghidorah, Gigan, Megalon, and MechaGodzilla 1)

8.) Godzilla: The Breach (Godzilla, MechaGodzilla 2, Kiryu, M.O.G.U.E.R.A. and the Jaegers vs. The Pacific Rim Kaiju and King Ghidorah)

7.) Godzilla: Wrath of Bagan (Godzilla and Mothra vs. Bagan, Bagan is very powerful, but not ridiculously OP in the style of Toho Kingdom)

6.) Godzilla, Gamera, and Ultraman: Greatest Battle in the Universe! (Godzilla, Gamera and Ultraman team up against each series' respective villains.

5.) Biollante vs. SpaceGodzilla (Biollante encounters SpaceGodzilla in outer space, prompting an epic battle across the galaxy between both monsters)

4.) Godzilla Returns (A continuation of the Heisei series, where Godzilla Junior appears decades after his father's death to protect the planet from SpaceGodzilla, Destoroyah, and Gigan, with the help of a newly-built MechaGodzilla and Mothra)

(These were all underdeveloped dumb ideas for movies I had growing up. My top three are all part of a standalone reboot trilogy I had envisioned several years ago. The following descriptions for them are heavily abridged.)

3.) Godzilla: Kingdom of Monsters (Godzilla, Rodan and Anguirus suddenly emerge and wreak havoc around the globe. The military tries fruitlessly to fight the monsters off, but eventually all three converge in the United States and battle for dominance. As if coinciding with the sudden appearance of these monsters, a gigantic alien construct codenamed "Gigan" being kept in Area 51 suddenly activates and hunts down Godzilla, who has successfully beaten Rodan and Anguirus and is battling the military in New York City. The military thinks Gigan is helping them, but he ends up causing more damage than Godzilla. Rodan and Anguirus arrive in New York and instinctually decide to aid Godzilla against the extraterrestrial creature. Gigan is defeated, and the three monsters go their separate ways, while the U.S. government begins a project to defend themselves from future monster attacks after harvesting components from Gigan's remains.)

2.) Godzilla: Destroy All Monsters (The U.S. government has successfully constructed MechaGodzilla, an advanced fighting robot built in the image of Godzilla himself. MechaGodzilla is sent to neutralize several new monsters that are appearing around the globe, including Kumonga in Nevada, Zilla in the Philippines, and even manages to successfully take down Anguirus in China. The monsters are transported to an island facility specifically designed to contain them. Godzilla appears in London, and MechaGodzilla is deployed against him. MechaGodzilla gains the upper hand, but Rodan arrives to aid Godzilla. After a grueling and destructive battle, MechaGodzilla is destroyed and Godzilla retreats to the sea while Rodan flies into the distance. Afterwards, a group of cloaked men are seen approaching a shrine in the Himalayas with carvings of vicious dragon heads adorning its exterior.)

1.) Godzilla: Monster of Monsters (This movie has a very long and complex plot. Basically, the U.N. forms G-Force to hunt down and destroy Godzilla. Instead, they find an island covered in the remains of several members of his race, including one egg, which later hatches into a baby Godzilla. Godzilla tries to find and raise the infant and travels to Tokyo to claim it, but G-Force's new mech, Kiryu, tries to fight him off. Ultimately, alien spaceships fly over Tokyo and steal Gigan's remains from G-Force HQ, while two priestesses warn of a prophecy that is coming true. The aliens have awakened their monster King Ghidorah, who Mothra sealed away millennia ago. They use Ghidorah and Gigan in an attempt to wipe all life from the Earth and claim it for their own race. The priestesses convince G-Force to set all the monsters free from Monster Island so that they can fulfill their destiny and fight off the extraterrestrials. Godzilla joins them and together they completely destroy Gigan in an epic battle and send Ghidorah retreating. Military units manage to take down all of the alien ships, and the planet is saved. The monsters are free, but G-Force only cares about killing Godzilla. They use the baby Godzilla to lure him to Antarctica, where they intend to kill Godzilla with a new weapon, the Dimension Tide. Godzilla arrives and fights Kiryu there while the DT is powered up. King Ghidorah, no longer under orders, arrives and attacks both monsters, damaging the DT in the process. A huge black hole opens in the sky, growing at a rate which will eventually envelop the Earth. Kiryu and Godzilla reluctantly join forces, but Kiryu is destroyed in the battle and Godzilla is mortally wounded. Godzilla sees the baby's (who is actually his son, whom Godzilla believed had persished when his mate was killed when Ghidorah attacked Earth in prehistoric times) fearful eyes and gains the resolve to keep fighting. He tackles Ghidorah into the black hole, and their combined masses cause it to close shut. Godzilla's son is taken to Monster Island, where he is raised by Anguirus and the other monsters. The final shot of the film is set about ten years later, and it shows the adult Godzilla Junior standing among the other monsters as their king, roaring triumphantly.)

I know the last three seem to have a ton of plot holes and logic gaps, but that's only because I left a lot out in order to keep these descriptions relatively brief. There is actually a lot more to them than what I posted here.