What if Pokémon Black & White had DLC? - Part 0: Changes to the Base Games

What if Pokémon Black and White had DLC? Instead of getting the set of sequel games, how would the story and features of Pokémon Black and White 2 be implemented as DLC to the original games?
Speculation Only. I have zero technical knowledge about Nintendo DS’s Hardware but if I had to guess, the final might be able to fit all on one cartridge.

[@thefakeslug]

Amazing video, can’t wait for the rest of the series! 😊

[@Sophia_does_stuffs]

Big dragony fellas