Better than ending on the cliffhanger that is King's Tide
Imagine if Ducktales ended with the FOWL Teaser in Moonvasion or the Della Duck reveal in the Shadow War
Imagine if Gravity Falls ended the show with the "Finally I have them all" scene in Gideon Rises
Imagine if Breaking Bad ended with the Season 3 cliffhanger
Imagine if Amphibia ended with True colors
Imagine if the MCU ended with half the universe dying in Infinity War
Imagine if Star Wars ended with The Empire Strikes Back with Han in Carbonite and the bombshell of Vader being Luke's son (keep in mind the prequels won't exist in this hypothetical scenario) and it being unconfirmed if Vader is telling the truth or not
Ending a Series or a Franchise on a cliffhanger is a very dumb decision