I was talking with someone about that saying that the "story" of botw 2 would be that the other races would come in, and that ganon take back control over all the old and new divine beast. They could keep the same hyrule map, make every city/outpost/ruins rebuilt and bigger, and add the new races new places with something like that :
Goron, rito, zora and gerudos stay where they are with their divine beast.
Skyward swords jellyfish race could have an entire underwater city with a big fish guardian
Minish could have a world almost anywhere with a spider or ant guardian
There could be a big underworld cave with the moleman and a big drill mole guardian
The eskimo from spirit track (i think) could have a little town and a big cave in the northern winter section above rito with a bear guardian
Hylians could have a great lions watching over the land on the plateau (which would still serve as a "tutorial section, but link would already have his skills)
Skyloft could be discover in the sky with a lot of little island to explore and a flying dragon beast.
There could be more, but i wouldnt want the map to be oversaturrate, the "old" divine beast would have new mechanics and puzzle inside, and the bosses could have the same name, just different attack. The goal would be to free the 10 actuals champion to make a big raid on hyrule castle.
Games on my backlog/not finish : 10
Currently playing : botw (wii u), mario maker 2 (switch), a couple guitar hero (wii)