They got rid of trophies and replaced them with spirits in Smash Ultimate
A source states, "Trophies have been around since the GameCube iteration, where they could be purchased in a randomized vending machine by using in-game earned coins. Sakurai stated that collectible trophies "wouldn't be a great fit in this game," adding that they were also really difficult to develop. Instead, the game will feature things called Spirits. These Spirits tie in with the game's Adventure Mode, which explains how these beings were "separated from their physical bodies." Spirits can be collected through "Spirit Battles," used to lend support to fighters in multiple ways, and will belong to either a NOVICE, ADVANCED, ACE, or LEGEND categorization. There is still yet a lot more to these guys, but we got a list to keep rolling through, so let's continue"(Eskey).
