I like how you're directly refuting everyone by just saying they're wrong. But

I will say this ; there is inf act ONLY one red lizard. The Red Prince is the only one, at all, in the world. Because he's a unique origin character.

Again, there's already a way to have a custom character iny our friends game - join when they're creating. This doesn't even mean you have to tell your friends not to play at all without you, because save files are a thing. One game on their own or with other friends, one with you(and other friends..). Though considering the way you're acting...

And again, if you're so sure it's so easy, make a mod. Mods aren't paid for, because they're fan things that are changed by the gamers. So really, if you're so sure it's SO simple that within the next three months everything could be rewritten and changed, then by all means, once the game comes out write up a mod for the game that changes all the required variables throughout the game to allow you to import and export characters and to level scale them automatically to match the host of the world and so on. You yourself have said, multiple times now, that it's simple. And if it's simple, it's a one man job, and since you're the one who wants it, you can certainly code it.