So, the kids and trolls win the game, enter universe C, and find themselves back on their respective planets, with their respective guardians/lusii all alive again(with the human guardians being siblings. Which means jane’s dad and John’s dad were cousins, because nanna and poppop were siblings, so it would be weird if their son(s) was/were the same person. Fuck. I wanted them to be the same person.) and they all remember both lives(the players have the memories of their new lives too). Also they’re all gods now, even the ones who didn’t reach godtier in the game. And the ones who went insane and/or evil (if you even want to keep them going evil and not just change it so they didn’t go evil) have turned good again and had redemption arcs and whatnot (whether they went evil in the first place because of mind control/brainwashing/mind manipulation or not), and Gamzee is back to being moirails with Karkat (if they ever stopped in the first place)(cause dammit I really like gamzee and i love gam<>(and/or)<3kat. Also, creepy-but-good gamzee is just as cute as original-nice-kind gamzee, so you can have him be either one).
Anyways. They still have the ability to communicate with each other over the internet or whatever even though they’re, like, galaxies away from each other or something. Probably a reward from the game. And they still have their sylladice even though they don’t exist in the new universe. And they have the ability to shift between troll and human forms. They also have the ability to switch between the two planets. Probably via transportalizers, which they have the ability to create.
So. With all these abilities, and the Alternian empire still being fucking awful (though maybe not quite as awful as before? idk.), they decide to create a rebellion/revolution. Jade finds a space relatively near earth to place the planets she still has(maybe freaking out astronomers in the process, what with new planets suddenly appearing out of nowhere), and they become a safe haven for trolls that they rescue that would otherwise have been culled for some reason or another (of course, they’re only allowed on them after a thorough mind/soul search using godly and/or troll powers to determine that they’re not going to hurt the consorts, as well as informing them of the rules and laws that they have (they probably went through all the earth and Alternian laws they could find in order to figure out which laws they wanted)).
Also, if davekat (which is tied with gamkat as my favorite pairing, with johnkat coming second), you could maybe make it a three-way matespritship-Moiraillegiance-human boyfriends thing between Dave Karkat and gamzee (davegamkat?), because Dave and gamzee totally would have got on like a house on fire if Dave hadn’t accidentally ruined everything by (accidentally?) mocking gamzee’s religion when gamzee was in a delicate place, and I really want to see them learn to like each other. You don’t have to, of course, but it’s rare I find Dave and gamzee learning to get along post-sburb, especially as oftentimes gamzee tends to stay evil, or just doesn’t get the chance to enter into the new universe.