What's a cartoon that in your opinion didn't lived up to its potential? (Not bad, just wasted potential)

The cartoons I put here aren't some ones that I found bad, but just very lacking.

What If: There were a lot of storylines and possibilities, but most episodes What "Ifs" weren't that interesting, and even the best ones, aside a very few, were too fast paced.

. Legend of Korra: The follow up of one of the greatest cartoons ever, the story felt too disjointed and not every character gets a fair treatment.

. Hazbin Hotel: Way too rushed, redeeming sinners in hell is a very interesting plot but it gets lost too soon into too many subplots and characters that didn't get the right amount of development.

. Voltron Legendary Defenders: Cool story, but it's held back by a critical absence of character development and the fear of going into dark territories, leaving a lot of plot holes during its run.