As much as I like Ultimate, World of Light is shit when compared to Subspace. Only one - yes, you heard me right, only ONE - boss fight is difficult as hell, and that’s the fight with Galeem in order to get the Dharkon related bad ending. All the other boss fights are easy as macaroni and cheese. Hell, even DRACULA is easy once you figure out his pattern.
Also, the designs for the main antagonists are even more unoriginal than Super Saiyan God, Super Saiyan Blue, Super Saiyan Rosé (although that one I can honestly understand), Ultra Instinct Omen, Super Saiyan Blue Evolution, and Ultra Instinct COMBINED. They’re just two spheres: one surrounded by wings, and one surrounded by tentacles.
There’s other problems with World of Light too: it’s so god darn boring, Dedede is SO GO***AMN HARD TO GET BECAUSE JOY-CON DRIFT IS A BITCH, and you have to listen to the worst main theme song in all of Smash AGAIN once you get the true ending to the game. And it’s pretty hard to tolerate too, as it’s EVERYWHERE IN THE GO***AMN GAME!