New world is in a Universe which is ranked Mid-low. Weaker the universe the weaker the potential, talent and living beinga born be. Vice versa, Stronger the universe the Stronger the potential, talent and living beings born be. You can increase the rank of this universe by adding elements to it like, DC, marvel, dragon balls, Demon Slayer, Bleach, Cyberpunk 2077, Neir, any apocalypse world, A Song of Ice and Fire, Mushoku Tensei, Journey to the West, God of Highschool, devil may cry, god of war, Tower of God, The Boys, Game of thrones, teen wolf, twilight, etc.... Or you can combine the elements.
Should you pick dangerous element it will rank up to high-low, if you choose less dangerous it will only be Mid-low/high.
You can only choose the new world's universe setting before getting transported.
And after you transported the played who was in canon will never remember any of the added or combined elements.....
The world will be AU no matter how many customization has been done.
There is only one user in all timeline. And have avatar in the other timeline...
Should they died user will get their experience, power, etc...And user can have them as allies as well...