Adding to what the person said above.
- Create a company and have capital $$$
- Sign in with lawyers $$$
It's all very bureaucratic.
And there's more, to make the changes you want, you'll still have to contact the Korean or Chinese team, whatever.
To maybe accept your changes you want, because practically all official servers follow their updates and make few changes
The money you will spend on this, it is easier to do a private, hire people who know how to handle the client, you will spend MUCH LESS.